利用PLC实现主令控制器的万能逻辑控制

Omnipotence Logic Realization of Master Controller by PLC Program

介绍了利用编写PLC程序功能块,把固有的主令控制逻辑改变成现场需要的任意控制逻辑,只要逻辑点位数相同,无需改动线路,只需要在程序里添加一个逻辑功能块,并按现场要求填写好相应的逻辑控制字,就能实现主今控制逻辑的转换,达到万能逻辑控制,有效降低了主令控制器使用的局限性.

Through compiling the function block of PLC program, turn fixed master logic into any control logic required by field. As long as their logic point digits are same, the master control logic con- version can be realized and omnipotence logic is formed. It is no necessary to modify wiring, and only need add a logic function block and fill in corresponding logic control words according to field require- ments. It has effectively reduced the limit of master controller usage.