07 Descriptions of Parameter Settings | REG2000
18
RTU mode:
START
Maintains no input signal for at least 10 ms
Address
Communication address: 8-bit binary address
Function
Function code: 8-bit binary address
DATA (n-1)
Contents of data:
N × 8-bit data, N
≤
16
…….
DATA 0
CRC CHK Low
CRC checksum:
one 16-bit CRC checksum consists of two 8-bit binary codes
CRC CHK High
END
Maintains no input signal for at least 10 ms
Communication address (Address)
00H: broadcasts to all Power Regenerative Units
01H: targets the Power Regenerative Unit at address 01
0FH: targets the Power Regenerative Unit at address 15
10H: targets the Power Regenerative Unit at address 16
... to the maximum of 254 (FEH)
Function code and data characters
03H: reads data from the register
06H: writes one set of data to the register
For example, reading two continuous data from register address 2102H. The Power Regenerative Unit
address is 01H.
ASCII mode:
Inquiry message string format
Response message string format
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
RTU mode:
Inquiry message string format
Response message string format
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
