INVT GD20-0R7G-S2-EU

Goodrive20-EU series VFD Communication protocol
126
ASCII master command message (the
command sent by the master to VFD)
ASCII slave response message (the
message sent by the VFD to master)
content
'3'
content
'3'
Low bit of data content
'8'
Low bit of data content
'8'
'8'
'8'
LRC CHK Hi
'5'
LRC CHK Hi
'5'
LRC CHK Lo
'9'
LRC CHK Lo
'9'
END Hi
CR
END Hi
CR
END Lo
LF
END Lo
LF
7.3.2.3 Command code: 08H (0000 1000), diagnose
Meaning of sub function code:
Sub function code
Instruction
0000
Return inquiry message data
For instance: carry out circuit detection on drive address 01H, the content of inquiry message
word string is the same with response message word string, its format is listed as below:
ASCII master command message (the
command sent by the master to VFD)
ASCII slave response message (the
message sent by the VFD to master)
START
':'
START
':'
ADDR
'0'
ADDR
'0'
'1'
'1'
CMD
'0'
CMD
'0'
'8'
'8'
High bit of write data
address
'0'
High bit of write data
address
'0'
'0'
'0'
Low bit of write data
address
'0'
Low bit of write data
address
'0'
'0'
'0'
High bit of data
content
'1'
High bit of data
content
'1'
'2'
'2'
Low bit of data content
'A'
Low bit of data content
'A'
'B'
'B'
LRC CHK Hi
'3'
LRC CHK Hi
'3'
LRC CHK Lo
'A'
LRC CHK Lo
'A'
END Hi
CR
END Hi
CR
END Lo
LF
END Lo
LF
7.3.2.4 Command code: 10H, continuous writing
Command code 10H means the master write data to the VFD, the number of data being