Command Code 08H, Diagnosis - INVT Goodrive20-UL VFD Series Operation Manual

Goodrive20-UL Series VFD
Low bit of data
content
CRC CHK low bit
CRC CHK high bit
END
Note: Sections 7.3.1 and 7.3.2 mainly describe the command formats.

7.3.3 Command code 08H, diagnosis

Meaning of sub-function codes
Sub-function Code
0000
For example: The inquiry information string is the same as the response information string
when the loop detection to address 01H of driver is carried out.
The RTU request command is:
START
ADDR
CMD
High bit of sub-function
code
Low bit of sub-function
code
High bit of data content
Low bit of data content
CRC CHK low bit
CRC CHK high bit
END
The RTU response command is:
START
ADDR
CMD
High bit of sub-function
code
Low bit of sub-function
code
High bit of data content
Low bit of data content
88H
C5H
6EH
T1-T2-T3-T4
Description
Return to inquire information data
T1-T2-T3-T4
01H
08H
00H
00H
12H
ABH
ADH
14H
T1-T2-T3-T4
T1-T2-T3-T4
01H
08H
00H
00H
12H
ABH
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Communication protocol