Astraada DRV-24 User Manual

Astraada DRV-24 frequency inverters Communication protocol
101
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
The RTU response 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
Low bit of CRC
C5H
High bit of CRC
6EH
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
7.3.2 ASCII mode
7.3.2.1Command code: 03H (0000 0011), read N words (Word) (max. number for continuous
reading is 16 words)
For instance: As for the inverter whose slave address is 01H, the starting address of internal storage
is 0004, read two words continuously, the structure of this frame is listed as below:
ASCII master command message (the
command sent from the master to the
inverter
ASCII slave response message (the
message sent from the inverter to the
master)
START
‘:’
START
‘:’
ADDR
‘0’
ADDR
‘0’
‘1’
‘1’
CMD
‘0’
CMD
‘0’
‘3’
‘3’
High bit of starting
address
‘0’
Byte number
‘0’
‘0’
‘4’
Low bit of starting
address
‘0’
High bit of data
address 0004H
‘1’
‘4’
‘3’
High bit of data
number
‘0’
Low bit of data
address 0004H
‘8’
‘0’
‘8’
Low bit of data
number
‘0’
High bit of data
address 0005H
‘0’
‘2’
‘0’
LRC CHK Hi
‘F’
Low bit of data
address 0005H
‘0’
LRC CHK Lo
‘6’
‘0’
END Hi
CR
LRC CHK Hi
‘5’
END Lo
LF
LRC CHK Lo
‘D’
END Hi
CR
END Lo
LF
7.3.2.2 Command code: 06H (0000 0110), write one word (Word)
For instance: Write 5000 (1388H) to the 0004H address 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)

Astraada DRV-24 Specifications

General

Brand	Astraada
Model	DRV-24
Category	Inverter
Language	English