Delta VFD300C43S-HS User Manual page 423

RTU mode:
START
Address
Function
DATA (n-1)
.......
DATA 0
CRC Check Low
CRC Check High
END
Communication Address (Address)
00H: broadcast to all AC motor drives
01H: AC motor drive of address 01
0FH: AC motor drive of address 15
10H: AC motor drive of address 16
:
FEH: AC motor drive of address 254
Function (Function code) and DATA (data characters)
03H: read data from a register
06H: write to a single register
Example: Reading two continuous data from register address 2102H, AMD address is 01H.
ASCII mode:
Command Message:
STX
Address
Function
Starting register
Number of register
(count by word)
LRC Check
END
Chapter 12 Description of Parameter SettingsC2000-HS
Defined by a silent interval of more than 10 ms
Communication address: 8-bit address
Command code: 8-bit command
Contents of data:
N × 8-bit data, n ≤ 16
CRC checksum:
one 16-bit checksum consists of 2 8-bit characters
Defined by a silent interval of more than 10 ms
':'
'0'
'1'
'0'
'3'
'2'
Number of register
(count by byte)
'1'
'0'
'2'
Content of starting
register 2102H
'0'
'0'
'0'
'2'
Content of register 2103H
'D'
'7'
CR
LRC Check
LF
12.1-09-4
Response Message
STX
Address
Function
END
':'
'0'
'1'
'0'
'3'
'0'
'4'
'1'
'7'
'7'
'0'
'0'
'0'
'0'
'0'
'7'
'1'
CR
LF