Astraada AS24DRV4075, Operation Manual

Page: 105 / 129

Astraada DRV-24 frequency inverters Communication protocol
103
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)
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’
‘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’
Byte number
‘0’ LRC CHK Hi ‘E’
‘4’ LRC CHK Lo ‘8’
High bit of data
0004H content
‘1’ END Hi CR
‘3’ END Lo LF
Low bit of data 0004H
content
‘8’
‘8’
High bit of data
0005H content
‘0’
‘0’
Low bit of data 0005H
content
‘3’
‘2’
LRC CHK Hi ‘1’
LRC CHK Lo ‘7’
END Hi CR
END Lo LF
7.4 The definition of data address
The address definition of the communication data in this part is to control the running of the
inverter and get the state information and relative function parameters of the inverter.