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.