基于电话拨号网络的PLC与PLC之间通讯

The Communication between PLC and PLC Based on Telephone Network

介绍一种PLC与PLC之间使用Modbus/RTU协议,通过电话拨号网络通讯的方法,并给出了采用GE 90-30系列PLC通讯模块HE693RTM705实现的具体配置与软件编制。

The paper introduces the way of communication between PLC andPLC with Modbus/RTU protocol, which based on telephone network. The actualhardware configure and software design by using series 90-30 PLC andHE693RTM705 RTU Master Communication Module of GE Fanuc Automationare gived.