摘要
CPM2A型PLC的CPU单元自带RS232接口,通过Hostlink协议只能实现1∶1上位机通讯.采用RS232 CAN模块将RS232接口转换成CAN接口,通过上位机软件协议转换的方法实现PC PLC网络通讯,扩充了PC PLC网络通讯功能.
The RS232 port built in the CPM2A PLC supports host link communication protocol, which can only communicate with super computer by one to one link. The RS232 port is converted to CAN port by RS232 -CAN module in this paper, and PC- PLC network is built using protocol conversion by software in super computer, which improves the performance of PC- PLC network.
出处
《机械与电子》
2005年第9期31-33,共3页
Machinery & Electronics
基金
上海师范大学基金资助项目(DKL303
DKL412)
