Introduction of the role and function of the PLC programmer

Programmer is one of the important peripheral PLC controller. Using the PLC programmer to a user program into memory, you can also use programmer check program, modify the program, monitoring the working state of PLC controller. Common to the PLC programming device with hand-held programmer and computer programming. In the early stages of the development of programmable controller, a dedicated programmer to programming. Small programmable controller using price cheaper, convenient to carry hand-held programmer, large and medium-sized programmable controller is used in small CRT display of the portable programmer. Special programmer can only for a manufacturer of certain products programming, using range is limited. Handheld programmer can't direct input and edit ladder diagram, only the input and edit command, but it has small volume, easy to carry, can be used in the field debugging, the advantages of cheap. The popularity of computer, making more and more users use based on personal computer programming software. At present some programmable controller manufacturers or distributors to provide customers with software programming, add the appropriate on the personal computer hardware interface and software package, can use personal computer programming of PLC. Using microcomputer as a programmer, can be directly compiled and displays a ladder diagram, the program can save, print, debugging, very favorable for malfunction.
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