Salicru CV30, User Manual, Page: 111 / 140

Communication protocol 111 - 140
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 inverter)
ASCII slave response message (the message sent
by the inverter to the 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 function
Command code 10H means the master write data to the inverter, 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 inverter whose slave address is 02H, write 50 (0032H) to
0005H of the inverter 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 inverter)
ASCII slave response message (the message sent
by the inverter 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’