INVT GD200A-004G-4, Руководство по эксплуатации

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GD200A series VFD Communication protocol
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ASCII master command message (the
command sent from master to the VFD
ASCII slave response message (the
message sent from VFD to the master)
END Hi CR LRC CHK Hi
‘5’
END Lo LF LRC CHK Lo
‘D’
END Hi CR
END Lo LF
9.4.2.2 Command code: 06H (0000 0110), write one word (Word)
For instance: Write 5000 (1388H) to the 0004H address of the VFD whose slave address is 02H,
then the structure of this frame is listed as below:
ASCII master command message (the
command sent by the master to the VFD)
ASCII slave response message (the message
sent by the VFD to the master)
START
‘: ’
START
‘: ’
ADDR
‘0’
ADDR
‘0’
‘2’ ‘2’
CMD
‘0’
CMD
‘0’
‘6’ ‘6’
High bit of write data
‘0’
High bit of write data
‘0’
‘0’ ‘0’
Low bit of write data
‘0’
Low bit of write data
‘0’
‘4’ ‘4’
High bit of data content
‘1’
High bit of data content
‘1’
‘3’ ‘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
9.4.2.3 Command code: 08H (0000 1000), diagnose function
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 the VFD)
ASCII slave response message (the message
sent by the VFD to the master)
START
‘: ’
START
‘: ’