博途S7-1200PLC自由口通信(Send_P2P和Receive_P2P指令编程)
S7-1200PLC的MODBUS-RTU通信的实战应用和完整SCL源代码,请参看下面的文章链接
https://rxxw-control.blog.csdn.net/article/details/132845221https://rxxw-control.blog.csdn.net/article/details/132845221MODBUS-RTU协议和常用功能码解读
https://rxxw-control.blog.csdn.net/article/details/133755924