CHAPTER 12: DESCRIPTION OF PARAMETER SETTINGS
215 63-4528—04
Address (Communication Address)
Valid communication addresses are in the range of 0 to 254. A communication address equal to 0, means broadcast to all VFD
(AMD). In this case, the AMD will not reply any message to the master device.
00H: broadcast to all VFD
01H: VFD of address 01
0FH: VFD of address 15
10H: VFD of address 16
FEH: VFD of address 254
Function (Function code) and DATA (data characters)
The format of data characters depends on the function code.
03H: read data from register
06H: write single register
Example: reading continuous 2 data from register address 2102H, AMD address is 01H.
ASCII mode:
RTU mode
06H: single write, write single data to register.
Example: writing data 6000(1770H) to register 0100H. AMD address is 01H
Command Message: Response Message
STX ‘?’ STX ‘?’
Address
‘0’
Address
‘0’
‘1’ ‘1’
Function
‘0’
Function
‘0’
‘3’ ‘3’
Starting address
‘2’ Number of data
(count by byte)
‘0’
‘1’ ‘4’
‘0’
Content of starting
address 2102H
‘1’
‘2’ ‘7’
Number of data
(count by word)
‘0’ ‘7’
‘0’ ‘0’
‘0’
Content of address 2103H
‘0’
‘2’ ‘0’
LRC Check
‘D’ ‘0’
‘7’ ‘0’
END
CR
LRC Check
‘7’
LF ‘1’
END
CR
LF
Command Message: Response Message
Address 01H Address 01H
Function 03H Function 03H
Starting data address
21H Number of data
(count by byte)
04H
02H
Number of data
(count by world)
00H Content of data
address 2102H
17H
02H 70H
CRC CHK Low 6FH Content of data
address 2103H
00H
CRC CHK High F7H 00H
CRC CHK Low FEH
CRC CHK High 5CH
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