欧姆龙CJ1W-SCU21通信扩展模块的无协议通信应用研究

No-Protocol Communication Based on CJ1W-SCU21 Extended Communication Module

无协议通信方式是PLC的一种串行通信方式,可以应用于PLC与上位机以及发信/授信器等其他设备的通信。介绍了以欧姆龙CP1H系列PLC为控制核心,以RCV02发信/授信器为通信对象,介绍了CJ1W-SCU21通信扩展模块的无协议通信方式。对使用无协议通信方式和通信扩展模块注意的问题作了总结。

Communication is a kind of serial communication mode of PLC that can be used in communications between PLC and host computers or the other equipments such as the post/Receiver.This paper introduces the series of OMRON CP1H of PLC as the control core,with RCV02 receiver for communication object,it introduces the protocol communication mode of the CJ1W-SCU21 extended communication module.No-Protocol communication method and communication module atten- tion problems are summarized.