欧姆龙CQM可编程控制器驱动DDM4A数码显示表程序例子-Omron PLC drive Connection digital display table procedures example

modbus tcp/ip 实例,实现PC与3个PLC之间利用MODBUS作为应用层,TCP/IP作为传输层.-modbus connection tcp / ip example, PC and three PLC using MODBUS as between the application layer, TCP / IP as the transport layer.