Delta Electronics AC Motor Drive VFD-G - Manual (Page 125)

Chapter 4 Parameters|
4-74 Revision July 2008, EG03, SW V1.06
3.2 ADR (communication address)
Valid communication addresses are in the range of 0 to 254. a communication address
equal to 0, means broadcast to all AC drives (AMD). In this case, the AMD will not reply any
message to the master device.
For example, communication to AMD with address 16 decimal:
ASCII mode: (ADR 1, ADR 0) = ’1’,’0’ => ‘1’=31H, ‘0’=30H
RTU mode: (ADR) = 10H
3.3 CMD (command code) and DATA (data character)
The format of data characters depends on the command code. The available command
codes are described as followed:
● Command code: 03H, read N words. The maximum value of N is 10.
For example, reading parameters 01-01 and 01-02 from address 01H.
ASCII mode:
Command message: Response message: Error response message
STX ‘:’ STX ‘:’ STX ‘:’
ADR 1 ‘0’ ADR 1 ‘0’ ADR 1 ‘0’
ADR 0 ‘1’ ADR 0 ‘1’ ADR 0 ‘1’
CMD 1 ‘0’ CMD 1 ‘0’ CMD 1 ‘8’
CMD 0 ‘3’ CMD 0 ‘3’ CMD 0 ‘3’
Starting ‘0’ Number of ‘0’ Error code ‘0’
data ‘1’ data(Word) ‘4’ ‘2’
address ‘0’ Data ‘1’ LRC CHK 0 ‘6’
‘1’ of ‘7’ LRC CHK 1 ‘D’
Number ‘0’ 0101H ‘7’ END 1 CR
of ‘0’ ‘0’ END 0 LF
data ‘0’ Data ‘0’
(Word) ‘2’ of ‘8’
LRC CHK 1 ‘D’ 0102H ‘9’
LRC CHK 0 ‘7’ ‘8’
END 1 CR LRC CHK 1 ‘D’
END 0 LF LRC CHK 0 ‘1’
END 1 CR
END 0 LF