EMERSON 5X00121G01 PLC module
Plc features and functions
(1) The main characteristics of plc. Plc is characterized by reliable operation, fast operation, building block structure, flexible combination, good compatibility, simple and rich programming and generation, and strong network functions.
(2) The main functions of plc. Plc system can well complete industrial real-time sequence control, state control, count control, step control and other functions; It can complete analog/digital (a/d), digital/analog (d/a) conversion, data processing, communication networking, real-time monitoring and other functions. Years of practice shows that plc is reliable, specially designed for factories, with reinforced parts according to the requirements of the working environment, real-time scanning practice and fault diagnosis functions, as well as simple troubleshooting, and is favored by users. The reason why plc is so reliable is that it is a real-time kernel or operating system that can execute relay logic, sequence function diagram, function block, structure text, command directory or their combination. In case of failure, its built-in equipment can maintain mechanical damage, and can maintain an orderly and predictable sequence.
We know that reliability is very important for industrial production. Every producer wants to keep his production line in good condition, but the fact tells us that it is impossible. We can try to avoid equipment problems and reduce the possibility of problems. At this time, the PLC control system is much better than the original relay control. In fact, we can see this from the appearance of both sides. After all, there are more circuits in the relay control system, and the installation and removal are more complex. Many lines are densely interwoven, which is not only easy to damage the lines due to mutual friction, but also easy to interfere with the signal electromagnetic wave in another line. PLC equipment is relatively simple and rule-based, and is not easy to be damaged due to self-interference.
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