Introduction - If you have any usage issues, please Google them yourself
Modbus -communication protocol is based on the master-slave architecture. It uses RS-485, RS-422, RS-232 interfaces, as well as Ethernet TCP / IP networks (Modbus TCP protocol) for data transfer.
The Modbus RTU message consists of the address of the SlaveID device, the function code, the special data, depending on the function code and the CRC of the checksum.
Packet : modbus_tcp_client.zip filelist
modbus_tcp_client.exe