vb程序控制IO卡工作,能控制继电器输出,接受plc的触点输入-vb process control io

vb调用winsocket控件，通过modbus TCP 协议与IO设备控制。-A VB program for communicating with I/O equipment by modbus Tcp protocol. in which winsocket activeX is loaded.

这是一款远程控制PLC IO口，可以远程修改PLC参数，实现远距离控制。开发环境vb.net-This is a remote control of PLC I/o port, can change the PLC parameter remote, realizing remote control development environment at vb.net