Astraada DRV-24 User Manual

Astraada DRV-24 frequency inverters Communication protocol
100
ADDR
01H
CMD
08H
High bit of sub-function
code
00H
Low bit of sub-function
code
00H
High bit of data content
12H
Low bit of data content
ABH
CRC CHK low bit
ADH
CRC CHK high bit
14H
END
T1-T2-T3-T4
The RTU response command is:
START
T1-T2-T3-T4
ADDR
01H
CMD
08H
High bit of sub-function
code
00H
Low bit of sub-function
code
00H
High bit of data content
12H
Low bit of data content
ABH
CRC CHK low bit
ADH
CRC CHK high bit
14H
END
T1-T2-T3-T4
7.3.1.4 Command code: 10H, continuous writing
Command code 10H means that if the master writes data to the inverter, the data number depends
on the “data number” in the command code. The Max. continuous reading number is 16.
For example, write 5000(1388H) to 0004H of the inverter whose slave address is 02H and 50(0032H)
to 0005H, the frame structure is as below:
The RTU request command is:
START
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR
02H
CMD
10H
High bit of write data
00H
Low bit of write data
04H
High bit of data number
00H
Low bit of data number
02H
Byte number
04H
High bit of data 0004H
13H
Low bit of data 0004H
88H
High bit of data 0005H
00H
Low bit of data 0005H
32H
Low bit of CRC
C5H
High bit of CRC
6EH

Astraada DRV-24 Specifications

General

Brand	Astraada
Model	DRV-24
Category	Inverter
Language	English