INVT Goodrive20-EU VFD Series, Operation Manual

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Goodrive20-EU Series VFD Communication protocol
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RTU slave response message (from the VFD to the master)
START T1-T2-T3-T4
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
CRC CHK low bit C5H
CRC CHK high bit 6EH
END T1-T2-T3-T4
Note: Sections 7.3.1.1 and 7.3.1.2 mainly describe the command formats.
7.3.1.3 Command code 08H, diagnosis
Meaning of sub-function codes
Sub-function Code Description
0000 Return to inquire information data
For example: The inquiry information string is same as the response information string when
the loop detection to address 01H of driver is carried out.
The RTU request command is:
START T1-T2-T3-T4
ADDR 01H
CMD 08H
High bit of sub-function code 00H
Low bit of sub-function code 00H
High bit of data content 12H
Low bit of data content ABH
CRC CHK low bit ADH
CRC CHK high bit 14H
END T1-T2-T3-T4
The RTU response command is:
START T1-T2-T3-T4
ADDR 01H
CMD 08H
High bit of sub-function code 00H
Low bit of sub-function code 00H
High bit of data content 12H