Lab
Modbus RTU
Modbus RTU packet builder
Hex preview
Two-way sync: edit fields or hex. CRC-16 appended automatically.
Live dissector
Paste or edit hex above — field tree updates from the declarative dissector registry.
Dissector · modbus-rtu
Hex
No bytes
Fields
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Modbus RTU fields
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Checksum sandbox
Modbus RTUBytes
6
CRC-16/Modbus
C5 CD
0xCDC5 · Low byte first (Modbus RTU wire order).