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.

VB做的生产线管理系统，跟mcgs触摸屏通过modbus TCP协议通信，数据库用access做的，已调试。-VB do the production line management system, with mcgs touch screen through modbus TCP protocol communication, access to do, has been debugging.