Field Toolkit

Modbus Message Decoder

Paste a Modbus RTU/TCP hex payload and get a structured breakdown of the frame.

Hex message

Assume RTU CRC at the end

Interpret as

Decoded output

Device address1 (0x01)

Function3 - Read Holding Registers

TypeRequest

CRC checkreceived c4 0b, computed c4 0b (valid)

Start address0 (0x00)

Quantity2 (0x02)