Modbus TCP 通讯协议程序，经过精心调试，附带ModSim32模拟器程序，对于PLC控制非常实用。-Modbus TCP protocol procedures, carefully debugging, with ModSim32 simulator program for the PLC control is very practical.

PLC通信调试模拟器，有接口文件，调用接口文件可以对PLC通信、模拟编程(PLC communication debugging simulator, with interface file, calling interface file can communicate with PLC and simulate programming)