Parser Online | Modbus

Always verify the parsed output against your device’s manual – parsers assume standard Modbus, but some devices use non‑standard addressing or data encoding.

These tools provide instant decoding of hexadecimal strings for various Modbus variants, such as RTU, TCP, and ASCII. Rapid SCADA Modbus Parser modbus parser online

| Field | Value | Meaning | |-------|-------|---------| | Slave address | 01 | Device ID 1 | | Function code | 03 | Read Holding Registers | | Starting address | 00 6B = 107 | Register 107 (0x6B) | | Quantity of registers | 00 03 = 3 | Read 3 registers | | CRC (RTU only) | 74 17 | Checksum, verified by tool | Always verify the parsed output against your device’s

A straightforward web tool for parsing Modbus RTU and TCP data packages (ADUs). It supports quick input of hex strings to reveal function codes and register data. nPulse.net Online Modbus It supports quick input of hex strings to

| Problem | Check with parser | |---------|-------------------| | CRC error | Parser marks CRC as “invalid” | | Wrong function code | Tool shows unexpected function name | | Data length mismatch | Byte count field doesn’t match actual data length | | TCP mixed with RTU | Parser will report “Invalid CRC” or “Malformed frame” |

The parser will output: