Modbus Request–Response Check
Paste a read request and response to check their fields and view register values.
How to use
Supports RTU functions 03 and 04. Addresses are zero-based offsets. Matching fields do not prove the frames belong to the same exchange.
Per frame: up to 256 bytes and 4,096 input characters. Read 1–125 registers.
01 03 00 00 00 02 C4 0B → 01 03 04 00 0A 00 14 DA 3E