INVT GD200A-004G-4, Руководство по эксплуатации

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GD200A series VFD Communication protocol
-137-
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)
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
9.4.2.4 Command code: 10H, continuous writing function
Command code 10H means the master write data to the VFD, the number of data being written is
determined by the command "data number", the max. number of continuous writing is 16 words.
For instance: Write 5000 (1388H) to 0004H of the VFD whose slave address is 02H, write 50 (0032H)
to 0005H 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
'1'
CMD
'1'
'0' '0'
High bit of starting
address
'0'
High bit of starting
address
'0'
'0' '0'
Low bit of starting
address
'0' Low bit of starting
address
'0'
'4' '4'
High bit of data number
'0'
High bit of data number
'0'
'0' '0'
Low bit of data number
'0'
Low bit of data number
'0'
'2' '2'