UFC760BE41 3BHE004573R0041 ABB

PLC

1.From switching quantity control to sequence control and transportation processing,it is a multi-function such as continuous PID control from bottom to top,and PID is in the interrupt station.

2.One PC can be used as the master station,and multiple PLCs of the same type can be used as the slave stations.

3.One PLC can also be the master station,and multiple PLCs of the same type can be slave stations to form a plc network.This is more convenient than using a PC as the master station:when there is user programming,it is not necessary to know the communication protocol,just write it in the format of the manual.

4.The PLC grid can be used both as an independent DCS and as a subsystem of the DCS.

5.PLC is mainly used for sequential control in industrial processes,and the new PLC also has closed-loop control functions.

PLC

1、从开关量控制发展到顺序控制、运送处理，是从下往上的连续PID控制等多功能，PID在中断站中。

2、可用一台PC机为主站，多台同型PLC为从站。

3、也可一台PLC为主站，多台同型PLC为从站，构成plc网络。这比用PC机作主站方便之处是：有用户编程时，不必知道通信协议，只要按说明书格式写就行。

4、PLC网格既作为独立DCS，也可作为DCS的子系统。

5、PLC主要用于工业过程中的顺序控制，新型PLC也兼有闭环控制功能。