7
(B) The addresses will remain in memory when parameters are reset.
To save new addresses, remove power from the drive, set DIP switch 7 to ON and reapply power to
the drive, at this time the new addresses will be read.
Examples of setting up the address (Black block means ON or OFF of DIP SWITCH):
ON
1
2
3
4
5
6
7
ON
1
2
3
4
5
6
7
ON
1
2
3
4
5
6
7
ON
1
2
3
4
5
6
7
ON
1
2
3
4
5
6
7
Communication
Inhibits
Communication
address is 01
Communication
Address is 01
Communication
Address is 02
Communication
Address is 63
Communication Protocol
Communication Data Frame:
STX Start character ‘:’ (3AH)
ADR 1
ADR 0
Communication address: 8-bit address consists of 2 ASCII codes
CMD 1
CMD 0
Command code: 8-bit command consists of 2 ASCII codes
DATA (n-1)
To
DATA 0
Contents of data:
n×8-bit data consist of 2n ASCII codes.
n<=25, maximum of 50 ASCII codes
LRC CHK 1
LRC CHK 0
LRC check sum: 8-bit check sum consists of 2 ASCII codes
END 1 End characters: END1 = CR (0DH), END0 = LF (0AH)
END 0
ADR (Communication Address)
Valid communication addresses are in the range of 1 to 63. Communication address equal to 0, means
broadcast to all AC drives. In this case, the AMD will not reply any message to the master device.
CMD (Command code) and DATA (data characters)
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 12. For example, reading
continuous 2 words from starting address 2102H
of AMD with address 01H
Command code: 06H, write 1 word
For example, writing 6000 (1770H) to address
2001H of AMD with address 01H.
Command message: Response message: Command message: Response message:
STX ‘:’ STX ‘:’ STX ‘:’ STX ‘:’
‘0’ ‘0’ ‘0’ ‘0’ ADR 1
ADR 0
‘1’
ADR 1
ADR 0
‘1’
ADR 1
ADR 0
‘1’
ADR 1
ADR 0
‘1’
‘0’ ‘0’ ‘0’ ‘0’ CMD 1
CMD 0
‘3’
CMD 1
CMD 0
‘3’
CMD 1
CMD 0
‘6’
CMD 1
CMD 0
‘6’
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