What is Modbus Parser
This tool parses and builds Modbus RTU/ASCII/TCP frames, with checksum utilities and register value conversion for industrial protocol debugging.
Key Features
- Parse RTU, ASCII, and TCP Modbus packets.
- Build commands with function-code-aware fields.
- Calculate CRC/LRC checksums.
- Convert register values across byte orders.
Steps
- Parse input frames in Parser tab.
- Build request frames in Builder tab.
- Validate checksums in Checksum tab.
- Convert register values in Converter tab.
FAQ
Why does parsing fail?
Likely causes include invalid format, insufficient length, checksum mismatch, or wrong protocol mode.
Why do values differ by byte order?
Devices may implement different byte orders; compare all candidate orders against real device readings.