INVT GD300L Series, Operation Manual, Page: 125 / 174

Goodrive300-LIFT series inverter Communication protocol
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10.4.2 Command code
:
06H
06H (correspond to binary 0000 0110), write one word(Word)
The command means that the master writes one record of data but not multiple records of data to the
inverter. The effect is to change the working mode of the inverter.
For example, write 5000 (1388H) to 0004H from the inverter with the address of 02H, the frame
structure is as below:
RTU master command message (from the master to the inverter)
START
T1-T2-T3-T4 (transmission time of 3.5
bytes)
ADDR 02H
CMD 06H
High bit of writing data address 00H
Low bit of writing data address 04H
High bit of data content 13H
Low bit of data content 88H
Low bit of CRC C5H
High bit of CRC 6EH
END
T1-T2-T3-T4 (transmission time of 3.5
bytes)
RTU slave response message (from the inverter to the master)
START
T1-T2-T3-T4 (transmission time of 3.5
bytes)
ADDR 02H
CMD 06H
High bit of writing data address 00H
Low bit of writing data address 04H
High bit of data content
13H
Low bit of data content
88H
Low bit of CRC C5H
High bit of CRC 6EH
END
T1-T2-T3-T4 (transmission time of 3.5
bytes)
Note
: section 10.2 and 10.3 mainly describe the command format, and the detailed application will be
mentioned in 10.8 with examples.