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Chapter 4 ParametersAT |Troubleshooting}| BLD-E1 Series
4-84
Revision May 2009, 00DE, V0.50
RTU mode:
START A silent interval of more than 10 ms
Address Communication address: 8-bit address
Function
Command code: 8-bit command
DATA (n-1)
to
DATA 0
Contents of data:
n×8-bit data, n<=16
CRC CHK Low
CRC CHK High
CRC check sum:
16-bit check sum consists of 2 8-bit characters
END A silent interval of more than 10 ms
3.2 Address (Communication Address)
00H: broadcast to all brushless DC drives
01H: brushless DC drive of address 01
0FH: brushless DC drive of address 15
10H: brushless DC drive of address 16
:
3.3 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, register address is 01H.
ASCII mode:
Command message:
Response message:
STX ‘:’ STX ‘:’
‘0’ ‘0’
Address
‘1’
Address
‘1’
‘0’ ‘0’
Function
‘3’
Function
‘3’
‘2’ ‘0’
‘1’
Number of data
(Count by byte)
‘4’
‘0’ ‘1’
Starting data
address
‘2’ ‘7’
‘0’ ‘7’
‘0’
Content of starting
address
2102H
‘0’
‘0’ ‘0’
Number of data
(count by word)
‘2’ ‘0’
‘D’ ‘0’
LRC Check
‘7’
Content of address
2103H
‘0’
CR ‘7’
END
LF
LRC Check
‘1’
END CR