command sent by the master)
sent by the master)
to 0005H whose slave address is 02H, then the structure of this frame is listed as below:
For instance: Write 5000 (1388H) to 0004H whose slave address is 02H, write 50 (0032H)
Command code 10H means the master write data, the number of data being written is
sent by the master)
)
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)
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
ASCII slave response message (the message
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
9.4.2.4 Command code: 10H, continuous writing function
determined by the command "data number", the max. number of continuous writing is 16 words.
ASCII master command message (the
ASCII slave response message (the message
START
': '
START
': '
ADDR
'0'
ADDR
'0'
'2'
'2'
