AccuEnergy AcuDC 241, User Manual

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5. Preset Multiple Registers (Function Code 16)
Query
Function Code 16(10H Hex) allows the user to modify the contents of multiple registers.
AcuDC 240 system parameters can be written by this function code.
The following example depicts how to preset slave device 1's AO1 parameter (current),
lower limit sign (+), lower limit value (0%), upper limit sign (+), upper limit value (100%).
Addr Fun
Data start
reg hi
Data start reg
lo
Data #of
reg hi
Data #of
reg lo
Byte
count
Value1
hi
Value1
lo
01H 10H 01H 09H 00H 05H 0AH 00H 01H
Value2
hi
Value2
lo
Value3
hi
Value3
lo
Value4
hi
Value4
lo
Value5
hi
Value5
lo
CRC16
hi
CRC16
lo
00H 00H 00H 00H 00H 00H 00H 64H C5H 8AH
Table 4-12 Preset multiple registers query frame
Response
The correct response is to send back address, function code, data starting address, data
number, CRC check after the value is changed .
Addr Fun
Data start
reg hi
Data start reg
lo
Data #of reg
hi
Data#of
reg lo
CRC16 hi
CRC16
lo
01H 10H 01H 09H 00H 05H D1H F4H
Table 4-13 Preset multiple registers response
4.3 AcuDC 240 Communication Address Table
Basic Measurement Parameter Address
Use Function Code 03 to read.