支持Modbus RTU的220V电压采集软件 非常好的学习Mosbus RTU编程 串口通信 CRC校验的样本-The 220V voltage acquisition software support Modbus RTU very good programming serial communication learning Mosbus RTU CRC checksum sample

delphi 网口通讯，串口通讯 连接服务器，很简单的，工业的modbus通讯协议-delphi network port communications, serial communications connection to the server, a very simple, industrial modbus communication protocol