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.