what Consist CPU?

Command control logic to complete the instruction fetch, instruction and execution analysis instruction. Timing control logic to provide necessary control signals for each instruction in chronological order. General clock timing signal is the most basic, is the time base of the entire machine, called the machine speeds. The time required to execute an instruction called an instruction cycle, different instruction cycles may be different. Is generally easy to control, according to the nature of the operation and control of the different nature of the instruction, the instruction cycle will be divided into several stages, each stage is a CPU cycle. Early cpu modules memory with little difference in speed, so the plc cpu cycles and memory access cycle is generally the same, and later, with the development of CPU speed has now a lot faster than memory, CPU cycles so often defined as memory access a fraction of the cycle.

Bus control logic circuit is a plurality of features and services for information passage. Generally divided on the CPU in terms of the internal bus and CPU external bus outreach, the external bus is sometimes also called the system bus, the front side bus (FSB) and so on.

An interrupt is a computer due to an abnormal event, or some event occurs randomly require immediate treatment, cause the CPU to suspend execution of the program now, switch to another service program to deal with this incident, processed and then return to the original program process. Interrupts generated by the internal machine, we call it a trap (internal interrupt), caused by an external device interrupts called external interrupts.

CPU constitution

Sequence and data, PLC is an integral unit.
In the user view, unnecessarily detailed analysis of the internal circuit of the CPU, but each part is working mechanism should be enough to understand. The controller CPU CPU work, by its reading instruction, interpretation and execution of instructions instruction. However, the pace of work is controlled by the oscillation signal. Operator for digital or logic operations, working under the command of the controller. Intermediate result registers involved in computing, and storage operations, it also means a unitary controller deer Bru ao lt;? Br> CPU speed and memory capacity are important parameters for the PLC, which determines the operating speed of the PLC, IO number and software capacity etc., thus limiting the control scale.

CPU constitution

CPU is the core of the plc cpu, functions as the nerve center, each PLC have at least one plc modules, which functions according to the program given to the PLC system to receive and store user programs and data, by way of scanning the input collected by the field device sent state or data, and stored in the specified register, while the diagnostic power and internal circuit PLC working condition and programming syntax errors. After entering the run, one by one to read the instructions from the user program memory, then the task was analyzed by Directive generate appropriate control signals to command associated control circuitry

CPU CPU controller controls the work

In the user view, unnecessarily detailed analysis of the internal circuitry of the CPU, but each part is working mechanism should be enough to understand. CPU CPU controller controls the work, cpu modules plc which it reads the instruction, the instruction interpretation and execution of instructions. However, the pace of work is controlled by the oscillation signal. Operator used for digital or logic operations, high-speed plc  working under the command of the controller. Register to participate in operations, and store intermediate result of the operation, it is also working under the command of the controller.

edium and small series products of all sizes

Plc modules to today, cpu modules plc has formed a large, medium and small series products of all sizes. Can be used for all sizes of industrial control applications. input output module plc  In addition to the logic processing functions, most modern PLC has a complete data computing capability, can be used for a variety of digital control. plc cpu module In recent years, large numbers of PLC functional unit that infiltrated into the position PLC control, temperature control, CNC and other industrial control. And Development Plc modules plus enhanced communication capabilities of human-machine interface technology, the use of PLC control system composed of a variety becomes very easy.

From PLC product line perspective

 From PLC product line perspective, Nanda proud extension NA400 and NA200 two existing series.plc cpu NA400 series PLC is mainly used in all kinds of engineering automation, plc ethernet module  especially in the petrochemical industry, coal mining, rail transportation, water conservancy and hydropower, building automation,  plc cpu module environmental protection, municipal and other areas; NA200 series PLC, mainly in the field of automation engineering with NA400 series of product applications, focusing on logic control of packaging machinery, food pharmaceutical machinery, lifting machinery, engineering machinery, textile machinery and other fields.

Common plc IO module as follows

Common plc IO module as follows:
Switch: Press voltage level points with 220VAC, 110VAC, 24VDC, by isolating way points, with relay isolation and transistor isolation.
Analog: divided by signal type, plc modules  plc analog output modules there is a current type (4-20mA, 0-20mA), voltage type (0-10V, 0-5V, -10-10V), etc., according to the accuracy of points, there are 12bit, 14bit, 16bit, etc. .
In addition to the generic plc IO module, controller plc there are special IO modules, such as thermal resistance, thermocouple, pulse and other modules.
Press the I / O module specifications and determine the number of points, I / O modules can be more or less, but its maximum number of CPU capacity can be managed by the basic configuration, namely by the largest floor or rack slot limit.

PLC Programmable Logic Controller features which

High reliability is the key to the performance of electrical control equipment. Plc logic controllers LSI due to the use of modern technology, strict production plc analog input output module process, the internal circuit to take the advanced anti-jamming technology with high reliability. For example, the production of F series Mitsubishi PLC MTBF of up to 300,000 hours. Some use redundant PLC CPU MTBF working time is longer. PLC of the machine outside the circuit, constitute a control system using PLC, and the same scale relay contactor systems, electrical wiring and switch contacts have been reduced to hundreds or even thousands of times, the fault will be greatly reduced. In addition, Plc logic Programmable Input Module controllers with hardware fault self-test function, failure to give timely warning information. In the application, the application are also incorporated into the self-diagnostic program peripheral devices, the system in addition to the PLC circuits and equipment also gained self-diagnostic protection. Thus, the entire system has high reliability is not surprising.

Plc high speed counting modules basics

Plc high speed counting modules: PLC English stands for Programmable Logic Controller, Chinese called the programmable logic controller, is defined as: an electronic digital computing plc programmable logic controller system operation, designed for use in industrial environments and design. It uses a programmable memory for storing its internal procedures, to perform logical, sequential control, timing, counting and arithmetic user-oriented operating instructions, and through digital or analog input / output control of all types of machinery or production processes. DCS Distributed Control System: DCS English name DISTRIBUTED CONTROL SYSTEM, Chinese called the Distributed Control System. DCS may be interpreted as the analog loop control more widely used in the industry, as the risk plc analog input output io module resulting from the decentralized control, and management of an automated high-tech products, and display the concentration. DCS generally consists of five parts: 1: Controller 2: I / O board 3: Operating Station 4: Communication Network 5: Graphics and pass away software.

PLC's domestic and international situation and future prospects

In the industrial production process, a lot of switching sequence control, which in accordance china programmable logic controller with the conditions of the order to move a logical and controlled chain protection action in accordance with the logic of relations, and a large number of discrete data collection. Traditionally, these functions are controlled by pneumatic or electrical system to achieve. 1968 American GM (General Motors) companies to replace the electrical Plc high speed counting modules control device, following the requirements of the second year, the United States Digital Equipment Corporation (DEC) developed a control device based on the integrated circuit and electronics technology, first applied to adopt procedural means electrical control, this is the first generation of programmable logic controller, called Programmable, is recognized as the world's first PLC.

History of PLC

In the industrial production process, a lot of switching sequence control, which in accordance with the Plc high speed counting modules conditions of the order to move a logical and controlled chain protection action in accordance with the logic of relations, and a large number of discrete data collection. Traditionally, these functions are controlled by pneumatic or electrical system to achieve. 1968 American GM (General Motors) companies to replace the electrical control device, following the requirements of the second year, the United States developed a programmable logical controllers digital control device company based integrated circuits and electronic technology, for the first time using procedural means used in electrical control, which is the first generation of high speed counter plc, said the Programmable Controller (PC). After a personal computer (referred to as PC) to develop, in order to facilitate, but also to reflect the high speed counter plc's features, programmable logic controller named Programmable Logic Controller (PLC), and now, still often referred PLC PC.

Definition of the PLC

There are many definitions PLC. International Electrotechnical Commission (IEC) is the definition of the PLC: Programmable Logic Controller is a digital electronic computing plc analog input output io module operating system, designed for applications in industrial environments. It uses a programmable memory, used in its internal storage to perform logical, sequential control, timing, counting and arithmetic operations such as operating instructions, and through digital and analog inputs and outputs, control types machinery or production processes. Programmable logic controller and related equipment, all with industrial control systems should be easy to form a whole, to expand the principles of the design of its functions. The mid-1980s to the 1990s, is the fastest growing PLC period, the plc analog input output module annual growth rate has been maintained at 30 to 40 percent. During this period, PLC capability in handling analog and digital computing power, man-machine interface capabilities and network capabilities have been greatly improved, PLC gradually entering the field of process control, in some applications in the field of process control to replace the dominant DCS systems. PLC has the versatility, ease of use, wide adaptation, can be * high anti-jamming capability, programming and simple. PLC in the industrial automation and control especially in order to control the position, in the foreseeable future, can not be replaced.　

CPU configuration

CPU is the core of the PLC, acts as the nerve center of each PLC have at least one CPU, which functions according to the program given to the PLC system to receive and store user programmable logic controller programs and data collected by way of scanning the input device sent by the field state or data, and stored in the specified register, while the diagnostic power and the PLC internal circuit operating status and programming syntax errors. After entering the run, one by one to read the instructions from the user program memory, then the task was analyzed by Directive generate corresponding control signals to command associated control circuitry. CPU mainly by the operator, controller, register and data connections between them, control and status bus constituted, CPU unit also includes a peripheral chip bus interface and related circuitry. The main memory used to store programs and data, is an indispensable component PLC unit. In the user view, unnecessarily detailed analysis of the internal circuitry of the CPU, but each plc digital input output io module part is working mechanism should be enough to understand.CPU controller controls the work, which it reads the instruction, the instruction interpretation and execution of instructions. However, the pace of work is controlled by the oscillation signal. Operator used for digital or logic operations, working under the command of the controller. Register to participate in operations, and store intermediate result of the operation, it is also working under the command of the controller. CPU speed and memory capacity are important parameters for the PLC, which determines the operating speed of the PLC, IO, and the number of software capacity, etc., thus limiting the size of the control.

plc cpu common programming language

There in the plc cpu in a variety of programming languages, they are ladder language, Boolean mnemonic language, the language menu map, function block diagram language and structured description language statements. Ladder language and Boolean mnemonic language is the basic programming language, which is usually composed of a series of instructions, use these instructions to complete most simple control functions, for example, instead of relays, counters, timers complete plc cpu module sequence control and logic control etc., through the expanded or enhanced instruction set, they can also perform other basic operations. Function Charts language and sentence description language is an advanced programming language, it can be more efficient to perform the operation if necessary, for example, analog control, manipulation, newspaper printed statements and other plc digital input output io module basic programming language data can not be completed function. Function block diagram language in the form of a functional block diagram of the completion of the required control functions connected by way of a soft, it has not only been widely used in the programmable logic controller, while the programming and configuration of distributed control systems are also often be used, because it has to connect, easy to operate, easy to master, etc., for the majority of the engineering design and application staff favorite.

PLC CPU configuration

 CPU is the core of the PLC, acts as the nerve center of each PLC have at least one CPU, which functions according to the program given to the PLC system to receive and store user programs and data collected by way of scanning the input device sent by the field state or data, and stored in the specified register, while the diagnostic power and the cpu module plc internal circuit operating status and programming syntax errors. After entering the run,plc cpu one by one to read the instructions from the user program memory, then the task was analyzed by Directive generate corresponding control signals to command associated control circuitry. PLC CPU mainly by the operator, controller, register and data connections between them, control and status bus constituted, CPU unit also includes a peripheral chip bus interface and related circuitry. The main memory used to store programs and data, is an indispensable component PLC unit.

plc cpu modules structure

plc cpu CP 343-1 IT has all the advantages of SIMATIC S7-300 system design:
Compact design
Rugged plastic enclosure, in front of: 15-pin SUB-D socket with lock, plc cpu modules
For connecting Industrial plc power supply module Ethernet (AUI / ITP)
Simple connection
CP 343-1 IT is mounted plc cpu on the S7-300 rack and connected via the backplane bus with other S7-300 template plc sequence of events recording module. No slot rules limiting.
User-friendly connection
SUB-D connector can automatically switch between AUI and twisted pair interface

PLC CPU configuration

CPU configuration CPU is the core plc cpu module, play a role in the nerve center of each PLC has at least one cpu modules plc, function according to the PLC system program which gives the user to receive and store programs and data, collected by way of scanning the field input device status or data sent and stored in the specified register, while the diagnostic power and PLC internal circuit operating status and programming syntax errors. After entering the run, one by one to read the instructions from the user program memory, then the task was analyzed by Directive generate corresponding control signals to command associated control circuitry. plc cpu modules mainly by the operator, controller, register and data connections between them, control and status bus constituted, CPU unit also includes a peripheral chip bus interface and related circuitry. The main memory used to store programs and data, is an indispensable component PLC unit. In the user view, unnecessarily detailed analysis of the internal circuitry of the CPU, but each part is working mechanism should be enough to understand.plc cpu controller controls the work, which it reads the instruction, the instruction interpretation and execution of instructions. However, the pace of work is controlled by the oscillation signal. Operator used for digital or logic operations, working under the command of the controller. Register to participate in operations, and store intermediate result of the operation, it is also working under the command of the controller.cpu module speed and memory capacity are important parameters for PLC, which determines the operating speed PLC, IO number and software capacity, etc., thereby limiting the size of the control....

plc cpu modules is the control center of the programmable logic controller

plc cpu modules is the control center of the programmable logic controller. It features a programmable logic controller system according to procedures given received and stored from the plc cpu module type of user programs and data; check the power supply, memory, I / O and watchdog timer status, and can diagnose the user program syntax error. When the programmable logic controller into operation, the first of its way to scan the input device receives the status of each site and data, plc cpuand are stored in I / O image area, and then one by one to read the user program from the user program memory, after after the command execution logic required to interpret the results or arithmetic instructions fed to the I / O image area or a data register. Etc. After all the user program execution is completed, the final transfer of data I / O image area of each output state or output register to the appropriate output device, so the cycle run until it stops running...

industrial automation plc Instrumentation Co., Ltd. cpu modules plc

industrial automation plc Instrumentation Co., Ltd.
industrial automation plc Instrumentation Co., general include: temperature, pressure, flow, level, cpu module plc machine detection; component analysis; regulation control and enforcement of the instrument categories. Regulation and control was originally regulator, now are generally DCS / PLC control; execution classes include electric / pneumatic / hydraulic actuators and control valves. College Textbooks automated instrumentation are described in detail (this is a professional course) for you to learn more about the study.
Each class has a professional instrument manufacturers to provide, of course, can also be supplied by the plc cpu modules integrated system integration manufacturers, including installation and commissioning. Only professional manufacturers, in order to ensure quality and service.

In the CPU modules also have a user program read / write protection.

The next generation of programmable logic controllers have all the features of 10, 16 or 24 plc IO modules in a class CPU models. Slim can take 20 I / O, CPU module. Model 65522-12 can be expanded to 56 the total I / O points. Model 65522-30 can be expanded to 244 total I / O points. Modules with programmable intuitive WindLDR ladder software. Program can be transferred between the optional memory storage boxes and equipment. In the cpu module also has a user program read / write protection.
These flexible, adaptable PLC is compact, because they are powerful, so you can create your needs without increasing your space requirements and budget system. Each module is equipped with a standard power circuit, four high-speed counters, an RS-232C port and an analog potentiometer. Slim and 24 I / O CPU module can be expanded with optional modules. Slim extremely compact housing, only 90 mm high 70 mm deep. There are nine expansion modules, including four analog input modules.According to the different CPU, you can create up to 244 I / O points.Each modules and program memory cartridge or real-time clock and calendar box, plus an RS-485 communication interface or enhanced system additional RS-232 adapter. These adapters allow connections to other PLC, printers, barcode readers, or other RS-232 devices. Monitor and change the status and settings of your CPU operating in the system HMI module 65522-20. Can also be linked to as many as 32 ​​other MicroSmart modules, or to the controller or PC.

The processor CPU perform all tasks by PLC functions

The processor CPU is the heart of the computer in the form of part of a microprocessor / microcontroller chip CPU. It oversees all operations required to perform all tasks performed by programmable logic control plc functions in the system.
It reads that information and input module connected to an external input device status.
It is stored in memory for later use the information.
Mathematical and logical operations it performs the specified application.
Solve the user's program, and writes the resulting value in memory.
It sends data to the external device as the output module plc, thus actuating the field hardware.
It completed peripherals and external device communication.
It performs self-diagnosis.

The basic scanning of plc cpu

Once the program in the CPU - the PLC and then set to "run" with the application plc module repeated. In addition to executing the program,
plc cpu modules periodically reads the state of the input device, and sends the data to the output device. State of the real world inputs sensed input system (switch, horizontal, etc.), and converts them into values ​​can be used by the CPU, and these values ​​are written to the input table. Application is executed, and the value is written to the output table. Then converted to real-world change in the output value of the output of the system (when the motor is switched on, the valve is opened, etc.)

Central Processing Unit CPU

The function of the CPU is to store and run the PLC software programs. It also interfaces with the Co-Processor Modules, the I/O Modules, the peripheral device, and runs diagnostics. It is essentially the "brains" of the ethernet plc.
  The CPU, shown in Figure X, contains a microprocessor, memory, and interface adapters.
  The items shown inside the cpu module plc and their basic functions are as follows:
  The microprocessor codes, decodes, and computes data.
  The memory (ROM, PROM/EEPROM/UVPROM,and RAM) stores both the control program and the data from the field devices.
The I/O Interface adapter connects the Co-Processor Modules, the I/O Modules and the Peripheral Device to the CPU.

How do plc cpu module work?

 PLCs are often defined as miniature industrial computers that contain hardware and software that is used to perform control functions. A PLC consists of two basic sections: the central processing unit (CPU) and the input/output interface system. The CPU, which controls all PLC activity, can further be broken down into the processor and memory system. The plc input module/output system is physically connected to field devices (e.g., switches, sensors, etc.) and provides the interface between the CPU and the information providers (inputs) and controllable devices (outputs).
 To operate, the CPU "reads" input data from connected field devices through the use of its input interfaces, and then "executes", or performs the control program that has been stored in its memory system. Programs are typically created in ladder logic, a language that closely resembles a relay-based wiring schematic, and are entered into the plc cup module's memory prior to operation. Finally, based on the program, the ethernet module plc "writes", or updates output devices via the output interfaces. This process, also known as scanning, continues in the same sequence without interruption, and changes only when a change is made to the control program.

About plc cpu hard-wired logic control unit controller

plc cpu control means, is mainly responsible for decoding the instruction, and sends control signals to each instruction to complete execution of each operation. 

Simple instructions by plc analog input module‍ consisting of micro-operations, complex instructions have to operate even by a few dozen to several hundred micro-component micro-operations. 

Hard-wired logic controller is entirely composed of mini plc‍ logic. After the instruction decoding logic controller through a combination of different gates, the timing signals of different control sequences sent directly to the execution of each instruction operation.

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plc cpu detailed configuration

Model: communication modules plc‍-20MT/MR-2AD (0-10V/4-20MA/PT100/EK thermocouple)-2DA (0-10V) 

Switching capacity: 12 inputs, 8 outputs 

MT transistor output type high-speed pulse input (15K) 

MR relay output type high-speed pulse input (15K) 

2 analog inputs, 2 analog outputs 

This paragraph plc soe module‍ series - not with high-speed transistor output pulse output, for driving stepper, servo motors and other equipment, please use the Series Molded plc cpu or FX2N series plate PLC.‍

Introduction plc cpu time control and data processing

plc cpu time control 

Time control of the various operations that a plc analog input output module‍ of time. During the execution of an instruction, and at what time to do what action should be strictly controlled. Only in this way, the computer can automatically output module plc‍ methodically. 

Data Processing 

That data arithmetic and logical operations, or other information processing.‍

Introduction plc cpu control components

plc cpu control means, is mainly responsible for decoding the instruction, and sends control signals to each instruction to complete execution of each operation. 

Simple instructions by plc digital io module‍ consisting of micro-operations, complex instructions have to operate even by a few dozen to several hundred micro-component micro-operations. 

Hard-wired logic controller is entirely composed of random logic. After the plc programmable intelligent controller‍ decoding logic controller through a combination of different gates, the timing signals of different control sequences sent directly to the execution of each instruction operation.

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Structure plc cpu control components

Structure plc cpu control has two components: one is at the core of the micro-micro stored program control mode; one is hard-wired logic-based profibus module plc structure. 

Micro microcode store holding, for each code corresponding to a basic micro-micro-operations, also known as the microinstruction; each instruction is composed of a different plc sequence of events module‍ of microcode, the microcode sequence constituting the microprogram. After the central processor decodes the instruction that certain timing control signals, according to the order given sequence to beat the micro cycle performed by the microcode identified a number of micro-operations, to complete the execution of an instruction.

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general-purpose registers plc cpu module

plc cpu modules register components, including general-purpose registers, special registers and control registers. 

General-purpose registers can be programmable logic controller plc‍ into two types of fixed-point and floating-point numbers, which are used to save the instruction operand registers and operation results. 

General-purpose input module plc‍ are an important part of the central processor, most instructions have access to the general-purpose registers. General register determines the width of the internal data path width of the machine, the number of ports can often affect the operation of the internal parallelism.‍

cpu modules plc control unit

cpu modules plc‍ Control means, is mainly responsible for decoding the instruction, and sends control signals to each instruction to complete execution of each operation. 

Its structure, there are two: one is at the core of the profibus module plc‍ micro stored program control mode; one is hard-wired logic-based control structure. 

Micro microcode store holding, for each code corresponding to a basic micro-micro-operations, also known as the microinstruction; each instruction is composed of a different plc sequence of events module‍ of microcode, the microcode sequence constituting the microprogram. After the central processor decodes the instruction that certain timing control signals, according to the order given sequence to beat the micro cycle performed by the microcode identified a number of micro-operations, to complete the execution of an instruction.‍

plc cpu module Product Description

plc cpu modules comes standard with two RS485 interfaces, optional Ethernet port 

High-speed computing and programmable logic controller‍ processing capabilities 

Larger user memory space, 

PID control to achieve more channels; 

Magnetic storage technology digital input plc‍ ultra-long retentive, 

Without battery support, data can be saved for up to 10 years; 

Iterative AES encryption algorithm to protect users of intellectual property rights; 

S7-200 is compatible with the support of STEP7-MicroWIN Programming.‍

AC input of the PLC CPU

Due to the increase of the AC input current limiting circuit, isolation and rectification of the three links, therefore, the delay time of the input signal than the DC input circuit is longer, it is plc programmable controller‍ shortcomings. However, due to the high voltage input terminal, so the reliability of the input signal is higher than the DC input circuit. General, plc cpu AC input methods for oil mist, dust and other high-speed counter modules‍ environments, the response of the less demanding situations, while the DC input mode is better for the environment, electromagnetic interference is not punished, for situations that require high responsiveness .

PLC CPU communication No.

Classified by the type of external power supply circuit for the DC input DC input a form of circuit (shown only one input circuit). When an external line switch is closed, the internal PLC communication modules plc‍ LED lights, phototransistor saturated conduction, then send the on plc sequence of events module‍ processor so that the CPU that the road signal input; switch off when the outside light the light-emitting diode coupled off, phototransistor deadline, CPU that the road no signal.

plc cpu modules communications functions

S5-compatible communication for communication between stainless steel 304ba and SIMATIC S5, SIMATIC S7-300/-400 and computer / PC. Necessary function calls are part of NCM S7 for Industrial Ethernet, must be integrated into the user program. 

plc cpu modules communications functions 

For the S7-300 (only servers), S7-400 (server and client), HMI stainless steel 301 and PC (with SOFTNET S7 or S7-1613) Communication Communication via CP 343-1, no other configuration. CPU with the programming device can be remotely programmed via Industrial Ethernet or WAN.

plc cpu modules designed for industrial

plc cpu modules via 100Mbit / s Ethernet, plc controller suppliers can be directly integrated into complex systems 

Remote programming via the WAN TCP / IP, can also use the telephone line connection (eg ISDN) 

Free high-speed counter plc connection can be adapted to any number of stations 

A plc cpu modules can be applied to a variety of applications: PG / PC, HMI systems, S5/S7.

plc cpu modules structure

CP 343-1 IT has all the advantages of plc manufacturer S7-300 system design: 

Compact design 

Rugged plastic enclosure, in front of: 15-pin SUB-D socket with lock, plc cpu modules 

For connecting Industrial Ethernet (AUI / ITP) 

Simple connection 

CP 343-1 IT is mounted on the S7-300 rack and connected input module plc the backplane bus with other S7-300 template. No slot rules limiting. 

User-friendly connection 

SUB-D connector can automatically switch between AUI and twisted pair interface

the internal structure of cpu modules plc Analysis

the internal structure of cpu modules plc Analysis
cpu modules plc as a power components, widely used in various power equipment. Its interior is mainly composed of four diodes of the bridge to achieve the input AC voltage to a DC output voltage.
Each working cycle in the rectifier bridge module, at the same time to work with only two diodes, the diode conducting the single function, cpu modules plc converting the AC voltage into a DC pulsed way.
Commonly used for low power rectifier  high-speed counter modules bridge anatomy will find its internal structure as shown in the full-wave rectifier bridge plastic package (most of the small power of the rectifier bridge is used package). Four main heating components within the bridge - diodes are divided into two groups were placed on a copper current output pin. In between there are two DC output connector pin copper copper, they were with the input pin (AC input wires) connected to form what we see in the  plc sequence of events module appearance of four external connection pin full-wave rectifier bridge.
Rectifier module is due to the general plastic package, in the diode, the pin copper, copper cpu modules plc and connecting wires connected to the surrounding as an insulating filler is filled with thermal conductivity material skeleton - epoxy. However, the thermal conductivity of the epoxy resin is relatively low (typically 0.35 ℃ W / m, up to 2.5 ℃ W / m), and therefore the bridge rectifier junction - is generally greater thermal shell (typically 1.0 to 10 ℃ / W). Under normal circumstances, the relevant parameters  plc input module exterior components, the manufacturer will provide the device junction in the natural cooling conditions - ambient thermal resistance (Rja) and comes as part of a radiator, conducted through the radiator cooling devices junction - case thermal resistance (Rjc).

Six reasons to let plc cpu modules filters work better

In the selection plc cpu modules, we are most concerned about the selection of filters, six major reason in the selection process, we want to know. Feedthrough filter, it must be determined according to the size of the space, and installation methods filter shape structure, installation size, then according to the voltage level of electrical current size selection filter parameters. Furthermore, we should note the following points to be found to meet your needs using the feedthrough filter. First, the circuit forms
According to the principle of impedance mismatch, filter impedance and impedance mismatch on both sides of the larger ports, the energy of electromagnetic interference attenuation is more effective, considering the low end of the high-impedance termination impedance circuit filter selection filter should be in, Principles high impedance, low impedance end of the  digital output module filter circuit is terminated, and the selection of the filter circuit according to the filtering requirements of the form. Second, the feedthrough filter insertion loss filter parameters most important parameter is the insertion loss, plc cpu modules which reflects the filter for suppression of interference signals. Various EMI filters have their corresponding attenuation versus frequency curve, plc cpu modules when selecting filter insertion loss should be determined based on the frequency and the extent and the cutoff frequency of the signal to interference attenuation requirements, it is worth noting that factory to the insertion loss are no systems in 50 European load (load> data measured under the conditions, but in the actual circuit input / output impedance is 50 ohm just not so practical in the line filter insertion loss and products often have different nominal values. for measuring filter performance, in the application and also the approximate measurement line l measurement, this is done in order to more realistic three feedthrough filter feedthrough filter cutoff frequency cutoff frequency 3dB insertion loss of the filter is called the frequency when the frequency exceeds the cutoff frequency of the stopband filter to enter the area, resistance to electromagnetic interference band signal attenuation will be greater in order to ensure the required pass frequency signals, unnecessary frequency signal is suppressed, must select the cutoff frequency of the filter well. to the filtering of a signal should be 10 times higher than the micro smart plc  frequency of the operation start signal at a frequency filtering, for example Noise data lines a 5MHZ, the cutoff frequency of the filter to be similar to 50MHZ, so as to make noise attenuation does not affect the signal. Generally, the lower the cutoff frequency of the filter, the greater the size, the price is higher, So do not blindly choose the filter cutoff frequency is too low, or the signals will need to filter out four, working electrical feedthrough filter operating voltage feedthrough filter when the filter is working properly within the operating temperature range can long withstand voltage. Moreover also need the correct choice of AC and DC filters, can not substitute plc programmable controller  each other, especially in applications where AC DC filter will not allow the use of alternative, otherwise the filter will fail and even damage due to almost all of the electromagnetic compatibility The project has a pulse interference tests, to be considered in the selection of the filter effect of this high-voltage pulse interference, voltage or resistance voltage to leave a margin in the high-voltage, high-current DC workplace, common organic film material feedthrough filter.

plc cpu modules introduce some system

Specializing in redundant PLC, HMI, servo systems and precision reducer, coupling and other modern industrial equipment systems developed and produced Zsa Industrial Equipment Co., Ltd. has a high reputation in the industry, advanced technology various automation equipment, strength plc programmable logic controller  Strong and excellent services, PLC, etc. Compared with the same redundant PLC products, the advantages are very prominent. For this reason plc cpu modules will introduce H series PLC (programmable logic controller system large) functions and basic equipment:
 1.CPU base (in addition to providing Power and CPU socket, there were 4,6,8 slot I / O module slots).
 2 power supply modules.
 3.CPU module. 4.I / O modules (depending on the need to select the appropriate modules can connect up to eight modules).
5 special function modules.
6 personal computer or notebook computer, a control program edit, modify use.
 PLC is the center of high-function control system, its software compatible MODICONPLC, instruction, plc cpu modules are  plc intelligent controller compatible with communication protocols etc MODICONPLC, widely used in water treatment, buildings, machinery and processing industries. In the application can be an independent redundant control system, but also through a special built-in functions: to connect multiple PLC communication instruction to achieve distributed control functions.

What is the definition of cpu modules plc

A friend asked: What is the definition Will module power is?
Power module can be directly mounted on a printed circuit board power supply, because of the many advantages of a modular structure, and therefore is widely used in power switching device module, the access equipment, mobile communication, microwave communication, and optical transmission, routers, etc. communications and automotive electronics, aerospace and so on.
Advantage of the power module
Simple design. Just a cpu modules plc, accompanied by  industrial automation plc a small number of discrete components, you can get the power.
Power modules shorten the development cycle. Module power is generally a wide range of input and output options. Users can also repeat the superposition or cross superimposed to form a combination of modular power supplies, multi-channel input, output, greatly reduced prototype development time.
 Changes flexible. Product design To change, simply convert or another suitable power supply module can be connected in parallel.
 Technical requirements low. cpu modules plc generally equipped with a standardized front-end, highly integrated power modules and other components, so make power design easier.
 Shell has the plc modular  form module power structure collectors sink, radiator and shell Trinity achieve a module power conduction cooling, the temperature is close to the minimum value of the power supply. At the same time, it gives the power module packaging Jinyu their table.
High quality and reliable. Power modules are used in fully automated production in general, and with high-tech production technology, stable quality and reliable.
Versatile: module power can be widely used in aerospace, locomotive ships, military weapons, power generation and programmable logic control plc  distribution, telecommunications, metallurgy, mining, automatic control, household appliances, instrumentation and scientific experiments in various fields of social production and life, especially in the field of high technology and high reliability plays an irreplaceable role.

plc cpu modules in cooling technology analysis

To ensure job stability and prolong the use life of the chip may not exceed the maximum temperature 85 ℃ [2]. Device operating temperature is increased by 10 ℃, its failure rate doubling [ 3 ] . In order to ensure the normal operation of electronic equipment safe and reliable long-term operation of the resistance, the use of appropriate , reliable way to control the temperature of electronic components , plc cpu modules make it work in the  programmable logic controller manufacturer environmental conditions in which the stable operation of the request does not exceed the maximum temperature . With the heat flux miniaturization of electronic components , micro- miniaturization, high integration of integrated circuits and micro- assembly is carried out , components, assemblies progress from time to time , the thermal design are also facing a severe challenge. The quality of construction of thermal power supply system can directly affect the long time stability . Heat transfer and flow brawn to school for the foundation , separate detailed structure of electronic equipment , rational and efficient design of programmable controller  the cooling installation , combined with advanced thermal analysis software simulation research, electronic devices invented a good working environment to ensure that heating components and power systems at a stable temperature can be allowed to work securely DC / DC power module thermal analysis process 1 ) analysis of the power supply circuit corresponding thermal circuit , plc cpu modules will certainly heat transfer pathway , draw the equivalent thermal model . 2 ) a power supply circuit configured to analyze planning , and certainly the main heating elements . 3 ) Application LSL establish a 3D model of the power supply of the radiator, then the application of  plc controller professional thermal simulation software EFD.Pro, based on current science and brawn numerical heat transfer theory , the practice of separating the thermal boundary conditions , stop the simulation model to establish imitation .
4 ) Stop the simulation results analysis . After stopping the simulation model to imitate , mimic the results of its analysis of whether the power fit to work requests.

cpu modules plc three modules were introduced

Each of the three modules are described : ( a ) video capture module
Video capture module includes built video capture wireless transmission module , such as: wireless cameras. Responsible for monitoring live video capture and compression, transmission became available for digital signals , it is not necessarily fixed within a confined area , it can be placed in any 4G signal can be received at the mobile device . Need to integrate wireless camera lens , video compression cards, wireless Internet access modules and other equipment. Network remote monitoring center can determine the specific location of the video data according to numbers from the address of each wireless camera wireless Internet access module.
Wireless camera video data is very large , in order to transmit the cpu modules plc must be compressed . Select the  plc sequence of events recording module correct video compression standards to ensure clarity and transmission fluid. This is our system is an important factor in the design considerations . (B ) transmitting module
Network transmission module is responsible for transferring the video data channel , cpu modules plc Its role is to ensure a good transfer rate and delay level. In wireless video surveillance system , 4G technology can guarantee a good wireless transmission rate and delay requirements. Through the wireless transmission of video data goes into a wired  plc temperature module transmission channel. The wired transmission path includes the IP transfer network operator , service gateways , PDN gateways , Internet video monitoring center and reach the wired transmission channel. After the video data is transmitted through the network module, the video monitoring center can download the video data processing and storage. (C ) video monitoring module via Internet, Ethernet connectivity , video surveillance center can have multiple physical addresses , video monitoring center is responsible for video information storage, management , querying, and real-time monitoring tasks , including  Programmable Input Module video storage server management and monitoring server.
 The system has a data transfer rate is high, image transmission delays small , wide scope of monitoring , access to end-users and more features , suitable for most industrial users .

Process plc cpu modules and work characteristics

(A) analysis of the controlled object and made a detailed analysis of the controlled object to control the process and work characteristics, understand charged with the object of mechanical, electrical, fluid between the controlled object to the proposed control system PLC control requirements, to determine control scheme proposed design task. (B) determine the input / output control apparatus according to the system requirements, the plc sequence of events module  system determines all the required input devices (such as: buttons, position switch, switch, and various sensors) and output devices (such as: contactors, solenoid valves, , signal lights, and other actuators, etc.), in order to determine the relevant PLC input / output device to determine the PLC I / O points (three) Select PLC
 PLC PLC options include the choice of models, the capacity, I / O modules, power supplies, etc. (d) allocate I / O points and peripheral hardware design PLC line 1. Assign I / O points to draw the PLC I / O points and connection diagram or table correspondence between input / output devices, the part 2 can also be designed to draw the line PLC peripheral hardware rest of the system electrical circuit diagram in step 2, including the main circuit and did not enter the PLC control circuits, etc. . By the PLC's I / O connection diagram and PLC peripheral electrical circuit diagram of a system consisting of electrical schematics. Electrical wiring system hardware have been identified so far. (E) Program Design 1. Program design based on the control system requirements, the use of appropriate design approach to designing the PLC program. To control procedures in order to meet the system requirements of the main line, each writing achievement of the control functions of each sub-task or procedure, and gradually improve the system specified function. In  analog output module addition, the program should normally include the following 1) initialization routine. PLC after power on, usually do some initialization operation, to start to make the necessary preparations to avoid system malfunction. The main contents of the initialization process are: the certain data area, the counter is cleared, etc., some of the data required for recovery of the data area, the relay is set for some or reset, so some initial display state.
  2), such as testing, troubleshooting and display program. These procedures are relatively independent, generally when the program is completed and then add the basic design.
  3) Protection and chain procedures. Protection and chain is an indispensable part of the program, must be considered carefully. The control logic it can avoid the confusion caused by the illegal operation.
 2 simulation debugging program
 Process simulation debugging basic idea is to facilitate the simulation of the actual site in the form of state, to create the necessary conditions for an environment to run the program. Depending on the way to generate on-site signal simulation debugging hardware method and two forms of simulation software simulation.
 1) is to use some of the hardware simulation  plc input output modules hardware device (such as a PLC or some other use input device, etc.) the analog signals to generate a field, and these signals are hard-wired connection connected to the input of the PLC system, the timeliness than strong. 2) simulation software is written in another set in the PLC simulation program to simulate the live signal, which is simple, but not easy to ensure timeliness. Simulation debugging, debugging can be segmented approach, and use the programmer's monitoring function.

The main performance cpu modules plc

The modular micro PLC system to meet the medium and small -scale performance requirements of various performance modules can be very good to meet and adapt to automation tasks simple and practical distributed plc controller suppliers  architecture and multi- interface network capabilities , the application is very flexible and user-friendly and simple no fan design increases when the control task , cpu modules plc freely scalable lot of integrated features make it very robust modular micro PLC system to meet the low-end performance requirements. Modular , fanless design , easy to implement distributed architecture and operation of a variety of performance levels to facilitate CPU, the full range of modules with user- friendly features that allow the user to select the appropriate modules depending on the application . When expanded mandate , they can always upgrade the  input module plc controller through the use of add-on modules . Therefore, it can create a fully integrated control system , cpu modules plc use in safety-related and non- safety-related tasks coexist plant. Using the same standard tools for configuring and programming the entire plant .

plc cpu modules connected to 4G steps

1 When using the terminal, why type "AT + CFUN = 1", returned ERROR?
A: In the instructions to enter the correct premise, first confirm whether the 4G module with pc connection is successful, check plc cpu modules Device Manager - Universal Serial Bus Controller is connected to  plc cpu module the device, if the device exists, then make sure USB line with the PC connection is successful, and then determine whether the module is turned on, press power button for 5 seconds, and power module, when returning + CEREG: 1:00, enter "? AT + COPS", registered network. 2 How to check the current registered network provider?
Answer: Enter "? AT + COPS", according to the return value to determine the current registered network provider. Returns + COPS: 0,0, is not registered to the network + COPS: 0,0, "CHINA MOBILE", 0 indicates registration to China Mobile's 2G network; + COPS: 0,0, "CHINA MOBILE", 2 means that the registration to China Mobile's 3G network + COPS: 0,0, "CHINA MOBILE", 7 indicates registration to China Mobile 4G network; 3 Why type, return ERROR. "AT + COPS?"?
A: In the instructions to enter the correct premise, the SIM card may be the problem, first check whether there is a SIM card slot confirm balances, confirm the SIM card and the antenna is plugged in, then enter "AT ^ DUSIMR" SIM card status query returns ^ DUSIMR: 1 indicates the plc input output modules  presence of a SIM card; enter "AT + CLCK =" SC ", 2" check SIM card LOCK state, return "+ CLCK: 0 \ r \ n", the SIM card is not LOCK; enter "AT + CPIN? "check whether you need to enter the PIN code, return" + CPIN: READY "said PIN has been entered, and do not need to enter a PIN code;
 4 How to activate data services?
A: Enter the "AT + CGDATA =" M-0000 ", 1" when returning CONNECT, surface data service activation is successful, then you can find the network connection is successful;
 5 Enter the AT commands connect to the  cpu modules plc Internet course, if there is a power outage, you can continue to operate in serial tool it?
A: No, plc cpu modules serial communication tool again to close the operation;
 6 Enter the AT commands connect to the Internet course, if there is usb interface is bad, you can continue to operate in serial tool it?
A: No, you need to re-open the serial port and enter "AT + CFUN = 4" soft shutdown, then enter "AT + CFUN = 1" to get started. 7 Why 4G network connection (to activate data services) yellow exclamation mark appears, the network connection status is displayed without Internet access?
A: In the case of an unstable 4G network, the network may jump to 3G or 2G network, but the SIM card only supports 4G networks,
Enter the activation of data services in the command (AT + CGDATA = "M-0000", 1) before, enter "AT ^ DSTMEX = 1,7", this command indicates that only select Connect 4G network, and then enter "AT + CGDATA =" M-0000 ", 1" to activate data services, conduct 4G network connection.

plc cpu modules capture signal input module

General PLC plc cpu modules have output input that you said body as a whole, are inseparable, the number of inputs and outputs on the body is fixed, but can be extended by the input and output modules, is the  cpu modules plc main External input and output modules, the number of input and output modules of different brands and models of PLC can plug is not the same,
There is another elephant Mitsubishi Q series PLC, is a power supply module, CPU module, input modules, output modules and other components, each module separately, according to the needs of different features free combination. plc cpu modules is a single host, if a program needs to touch temperature control or analog control, or to buy a module temperature module or analog modules are connected to the PLC side, if the module is  output module plc connected to more than a turn and side , No. module from the PLC and the edge is first started writing, it is Mitsubishi regulations,
Collection, such as temperature module must have a temperature sensor, temperature sensor signals to the module, temperature control, etc. By changing the procedures described here do not.
Mitsubishi module has three interfaces, you  programmable logic controller can choose with, respectively, analog output, voltage output, current output, you can choose the three.

How to tell the motherboard powered plc cpu modules

Now the cpu is usually powered by a 12V , the output voltage is based on the type of CPU and BIOS parameters are automatically set early with the jumper settings, this depends on the motherboard design. Voltage between 1-2v it. plc cpu modules notebook and some less than 1V. So: the input FET is 12V ( motherboard before 2005 are 5V, 3.3V power supply ) output and plc communication module  incentive side FET switching signal because it is the state , is the uncertainty of the multimeter ! CPU power supply module , an inductor with two capacitors is basically between 15W to 30W, with power divided by the current know how much voltage . Normal computer maintenance is not so troublesome , plc cpu modules that burned on another part of the same size on the line, pay attention to the voltage value on it. Almost all of the programmable logic controller plc  components is the capacitors on the motherboard burned up to the general power supply module is divided into : CPU power supply Northbridge , Southbridge power , graphics power , memory, power supply, sound card supply these parts , this is a good quality motherboard characteristics .
Generally these can be a lot of shrinking supply circuit . That is why the motherboard with some of your chips and some cheap main reason .
Feeding circuit all the way from the two capacitors, two inductors, a rectifier coil. General CPU power module you can count the plc industrial controller  number of capacitors arranged neatly near the CPU to determine a few phase supply. Others also generally be so judged .

Some of the main exposition plc cpu modules modules

If there is an alarm relay on the meter, then set the alarm temperature on the instrument, the output relay is directly connected to the digital inputs plc and public clients. If there is no alarm relay on the  input module plc meter (meter is no such general alarm relay), direct access to analog values ​​plc to make their own alarm in the program. And direct access to the analog case plc, and because plc and instrumentation wiring different models differ, analog signal inputs can be 4-20mA, it can be 0 - (5) 10V, can also be thermal resistance and the like, the situation is more, the need for specific models can be. What is the installation of the module depends on the general  programmable logical controllers input and output modules are not installed the driver, but the Mitsubishi motion CPU modules need to install the driver and set up. General PLC run the installer to write a good program it. Not add a module plus a driver, such as AD / DA module, just write in the program on it. Some PLC is not with AI (analog input) and AO (analog output) function, but usually there with an expansion slot, or expansion socket for programmable logic controller  adding analog input and output functions, 32DI (32 个input module), 32DO (32 output ports module), if the PLC itself comes with input and output ports is not enough, you can add these modules to perform the functions specified pull.

The main analysis cpu modules

Domestic small PLC is facing another important constraint is the product of the market. PLC applications suitable for 90% of industrial and domestic applications of small businesses PLC about 20,000 , more than 90% are SMEs. Faced with such a fragmented market , domestic enterprises must micro smart plc  effectively organize planning traditional sales activities. The author believes that strong marketing and foreign multinational companies are different, domestic enterprises should be on break point to end customers . We are pleased that we visited customers , about 90 percent of customers to accept the concept of domestic PLC , 50% of customers are willing to try the product , especially in the procurement process more efficient private enterprises, from the trial to be able to quickly batch procurement. From our survey, we can  plc controllers see that these companies are most concerned about is not the brand, but the product performance and stability , the product is available once they are convinced it will not hesitate to use domestic PLC, because of their own production facilities and foreign products are competition. cpu modules small PLC is the product of a high degree of product , foreign multinational companies have decades of operating history , a major international supplier ranking PLC hardly changed over the past decade . Faced with such a mature , stable plc digital output  market , domestic enterprises are facing difficulties can imagine , on the technology , products, brands , marketing , finance, human resources , quality, service and other factors that constitute the business chain , each link needs to carefully treatment, the risk of any one link will cause the whole chain breaks .

What is a compact plc cpu modules

OB1 is the main program loop execution module corresponding to the block, which  micro smart plc is the backbone of STEP 7 program. Most other OB corresponds to a different interrupt handler in. Each OB and is closely linked to its corresponding type and priority. OB1 relatively low priority, it is a priority, so OB1 usually can always be interrupted by other OB.
Control Function Module FC1-FC8, according to the current running status of the device in which the implementation of the corresponding control functions, each corresponding equipment to complete action on the device; temperature control module FC10, FC11 control function is read into the device horizontal, vertical and two The plc intelligent controller  current direction of the temperature signal, the D / A conversion and digital processing, and the results compared with the set temperature, with the result of the comparison, the control horizontal, vertical and two of the heater switch, the switching frequency and the response speed of the heater can be achieved by setting the PID controller parameters.
 Shared data storage module DB100 for the current operating status and  cpu module plc working methods, including horizontal, vertical in both directions sealing temperature setpoint and actual values ​​into / out of the running speed setting material as well as the need to adjust with the timer , the counter value is set such that the stored data can be called at any of the functional modules.

Features plc cpu modules in each module on the computer motherboard

DMA channel containing the chipset controller, 8-channel control and data  cpu module management DQR0 ~ DQR7's. DMA channels currently used to exchange data with the computer equipment directly to a floppy disk, Ultra DMA hard drives, SCSI hard drives and optical drives and other external devices IDE interface
Real-time clock and CMOS RAM timer
The system provides real-time clock timer date and time when the system is industrial automation plc  shut down, the date and time stored in the CMOS RAM, when powered by a battery, and continue to go.
  With the current integration of development, most are integrated into the chipset Northbridge and Southbridge chips. Northbridge chip on the motherboard is a chip from the CPU recently, in charge of the L2 or L3 Cache, memory interface, CPU Interface, AGP graphics interface and high-speed ECC error correction. Southbridge responsible for KBC (keyboard controller), RTC (real time clock controller), PCI, ISA, USB, Ultra DMA/33 (66) EIDE data transmission and ACPI (Advanced Energy Management) and so on. Northbridge which plays a leading role, also known as the main bridge.
 In recent years, AMD and INTER are integrated in the CPU memory controller, a large plc analog io module  part of the motherboard, most motherboards including h61 later canceled the Northbridge, Northbridge functions will be integrated into the CPU. Northbridge may later we rarely see it.

Some simple introduction plc cpu modules of

Logical processor is threaded, is called a logical processor should he  communication modules plc processor is not complete, as you can understand the basic structure of the execution unit of the processor.
Dual-core 4 thread is hyperthreading, his understanding is not dual-core simulation into four core, he is to be a core integrated two logical processors that two execution units. So that he can be like four-core processors in addition to four-threaded task, overwhelmingly in support of multi-core tasks are to support Hyper-Threading, but the dual-core 4 thread is always a dual-core processor.
Here to explain the core is there a more complex combination consisting  programmable plc of multiple parts, he does not just consist of the processing unit, the core processing unit contains something + L1, L2 + + instruction processing unit clock generator and so on. Hyper-Threading is to integrate the two core execution units.

plc analog input modules continue to take advantage of the domestic application of technology plc

(1) for such a huge market, China should focus on financial and technical strength, develop and produce a series of proprietary products as soon as possible plc, plc technology is from closed to open, it uses a lot of technology, common hardware, software standardization, makes plc design and production of technical barriers no longer exist. In recent years, coupled with the rapid development of chip technology, the introduction of plc temperature module  products with international competitiveness plc has become possible. Domestic manufacturers should come together to form plc group of companies, the establishment of specialized research institutions to jointly develop a variety of mechanical and electrical products, such as: inverters, servo systems, man-machine interface, greatly improve product reliability, compatibility, establish a sound sales network and service system, the courage to compete on the international stage with the multinationals, the only way the product can be based on domestic plc (2) China's automation industry plc domestic market continued to take advantage of the application of technology to expand the application fields. The plc applications in various fields of national economy, we must also by virtue of technology and labor advantages, gradually integrate into the international plc application market, actively participate in international competition, technological advantages of our application to form a true value-added services, driven by industry-related equipment and software development. iec61131-3 has established a world-recognized software product model plc directly using iec61131-3 standard domestic enterprises to keep pace with the international advanced level shortcut. Full  programmable intelligent controller account of the plc in a variety of different industries when applied to the internal resources required software model set aside sufficient resources, so our product development plc iec61131-3 to comply with international standards. (3) plc expanding range of applications, while efforts on the software integration. For different industrial processes, with its own distinctive form of system integration software, HMI software and application software. (4) the development of small plc products, you must select an appropriate balance between integration, functionality, applicability, economy, etc., designed to meet the different requirements of users of the product. Small plc will continue to be the market mainstream products, small plc is most likely the first to achieve localization, according to the characteristics of China's current economic development, small plc localization is the trend. Based on the domestic market, the domestic plc manufacturer can quickly provide users personalized products tailored according to the specific needs of the intelligent plc  user. The Chinese users multinationals difficult to rapid feedback to the special needs of foreign plc contributed to the rapid improvement of the manufacturer of the product.

Some problems plc cpu modules of

Drive in function provides a variety of fieldbus communication module , is ideal for system integration applications , parking facilities and remote monitoring applications ; built-in PLC function can Nanda plc controller suppliers  replace the small single-chip controllers, counters and timers , thereby significantly reduce system cost , which is very suitable for price-sensitive machining industry ; adopts European design , can hang side by side rails can be added back , compact body type can be significant savings in installation space ;
Meanwhile, the products do parallel DC bus powered , energy efficient mutual feedback absorbed , distributed braking resistor burden , and more than one use the same brake module , greatly reducing the Nanda plc digital input  system cost ; fully comply with export requirements.
In addition, the product can also be convenient and flexible range of optional accessories , such as I / O card , A / D, D / A module, digital operator , PG card , communication module, the customer may need a reasonable configuration , allowing the system to achieve best value for money ; perfect protection , high accuracy current sensing , are the highlights of its functions .
Drive only in product features, performance and  Nanda plc input output modules control technology are always inherited the advantages of automation Delta family , but also in the application point of view , a flexible modular design, environmental protection and energy saving aspects of innovation . But even more noteworthy is that , VFD-E series inverter built a powerful PLC 's

Full servo warp knitting machine mechanical structure and working principle plc cpu modules control

 The traditional textile industry processes , including fibers, weaving, finishing and garment four parts. Weaving process , including woven , knitted , woven and non-woven . Divided into warp knitting Nanda digital input module  and weft . After all the work on the needle with a group or several groups of yarns arranged in parallel , in the warp feeding machine , but formed into a circle knit , this method is called warp knitted fabric formed by weaving called matter . Our warp knitting industry after decades of development , constant restructuring, especially high in recent years, companies in emerging regions warp starting point , reasonable structure , significant  Nanda ethernet module plc economies of scale , into scientific research universities and research institutes , as well as research combined to make our warp knitting industry has been developing rapidly , is becoming the center of world warp industry. Traditional warp knitting machines , mostly chain-type warp knitting machine , because of its mechanical structure of the spindle drive , no import electric drive , resulting in its following disadvantages: woven flowers slow and inefficient ; chain complex mechanism , each replacement of a  Nanda micro smart plc flower , you need to spend more time , and each pattern corresponds to a chain block , this time to replace the long pattern , high cost. Resulting in the production of small batch orders lost meaning ; due to the complexity of the organization , resulting in a complex pattern can not be produced on a chain block machine . Only produce relatively simple fabric flower , can not meet the increasing demands , the current full servo warp knitting machine has gradually been applied in the textile . Now all servo on warp knitting machine production , efficiency , pattern diversity, quality of products have a good advantage , and therefore will become the mainstream in the future jacquard weaving .

plc cpu modules in the PLC control system design methods

First, the most important issue to mention the programmable controller technology is used in automatic control engineering , how to use a comprehensive knowledge learned in front of the point , according to the Nanda plc controller manufacturers  actual requirements of reasonable engineering combined into the control system , introduced in this control system consisting of a programmable controller general methods.
Second, the basic steps programmable controller system design 1. The main contents of the system design ( 1 ) to develop control system design specification. Technical conditions generally in the form of design task to determine which is the basis for the entire  Nanda cpu modules plc design ; ( 2 ) select the form of electric drive and motor , solenoid valve actuator ; ( 3 ) PLC selected models ; ( 4 ) the preparation of the PLC input / output allocation table or draw input / output terminal wiring diagram ; ( 5 ) to write software specification according to the system design requirements, and then use the appropriate programming language ( commonly ladder ) program design ; ( 6 ) understand and follow users cognitive Nanda plc digital input  psychology , attention to human-computer interface design , enhance rapport between man and machine ; ( 7 ) console design , electrical cabinets and non-standard electrical component parts

cpu modules plc purposes

Memory card CPU module must plug in the power-off state, the power does

not affect the operation because it is FLASH ROM.
Uninterruptible power plug, then the risk may  Nanda plc supplier damage the card is such a

set of rules, who would not take the risk hot plug, if you do not believe

this ramp, then it is so dry, may be uncertain or bad, but who can not

protect you Not bad, because he is not hot swap stuff.
U disk, IC card is hot swappable, but he Nanda analog output plc  has some special structure, in

addition to its reader device for his actions also have special

considerations when unplugging U disk like the best is to close , in

essence, is he not read and write.
PLC can not seen when the CPU module memory  Nanda Programmable Input Module card reader U disk hot-swap

operation is described as so considered, so that you do not take risks.

Which calculation plc cpu modules ten modules

CPU has the basic functions of the following four areas:
1 This refers to the sequence control instruction execution order control program instructions. There is between each instruction in Nanda plc IO module  the program's strict order, the order must be in strict accordance with the procedural requirements of the execution, in order to ensure the correctness of the computer work.
2 the function of controlling the operation of an instruction executed by a computer is often a component in a sequence of actions to achieve. CPU according to these instructions, to produce the corresponding operation control signals sent to the corresponding components to  Nanda plc program logic controller control these components according to the requirements of directive action.
3 Time Control Time Control is the timing of the implementation of a variety of operating time. During the execution of an instruction, and at what time to do what action should be strictly controlled. Only in this way, the computer can automatically work methodically.
4 data encryption for data that arithmetic and Nanda plc input output modules  logical operations, or other information processing.