Programmable controller ( PLC) With the microcomputer ( MC) The difference between the control

In short, the MC is universal machine. General machine and PLC is dedicated. Computer and microcomputer is ever developed on the basis of large scale integrated circuit, its biggest characteristic is fast calculation speed, strong function, application range is wide, in scientific computing, scientific management and are widely used in industrial control. So, the MC is a general-purpose computer.  The PLC is a kind of special designed to adapt to industrial control computer. But the point of view of industrial control, PLC is a kind of universal machine, as long as matching the corresponding modules can be applicable to all kinds of industrial control system, the users only need to change the user program can meet the requirements of industrial control system of the specific control. The MC must be based on the actual need to consider the anti-interference problem and the design of hardware and software, to meet the special needs of equipment control. So the MC is universal machine. Based on the above understanding, can get the MC and the PLC has the following difference: ( 1) PLC anti-jamming performance for high MC ( 2) PLC programming than MC simple ( 3) PLC controller design debug cycle is short, 4) PLC I / 0 response speed is slow, have larger hysteresis ( MS） Fast response speed, and the MC ( 我们) 。 ( 5) PLC is easy to operation, the training time is short; Long and MC is more difficult to staff training; ( 6) PLC is easy to repair, MC is more difficult with the development of PLC technology, its function is more and more strong; MC also gradually improve and improve the mutual penetration between and make the gap between PLC and MC are getting smaller, but in a long time in the future, the two will continue to co-exist. In a control system, PLC will focus on the functions in function control, and the MC will focus on the information processing.
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