基于Modbus协议的PC与下位机PLC间的通信程序

The Modbus Protocol Based Communication Program Between PC and PLC

介绍一种用Modbus协议开发工控上位机 (PC)与下位机 (PLC)之间的通信程序。在上位机中 ,一台运行原装组态软件GFW3 0 ,另一台在DOS下运行自编的软件。

The communication program developed by Modbus protocol for Industrial PC (host computer) and PLC is introduced. In one of the host PCs, the original configuration software GFW3 0 is operated and in another PC, self programed software is running under DCS.