Appendix
A.3 MODBUS
SENTRON PAC4200
254 System Manual, 09/2009, A5E02316180B-02
A.3.12 Configuration settings with the function codes 0x03, 0x04, and 0x10
Addressing the configuration settings
You can use the MODBUS function codes 0x03, 0x04, and 0x10 for write accesses on all the
configuration settings listed below.
Table A- 22 Configuration settings
Offset Number of
registers
Name Format Unit Value range Access
0 = 3P4W
1 = 3P3W
2 = 3P4WB
3 = 3P3WB
50001 2 Connection type Unsigned long -
4 = 1P2W
RW
0 = No 50003 2 Voltage Transformer Yes / No? Unsigned long -
1 = Yes
RW
50005 2 Primary Voltage Unsigned long - 1 ... 999999 V RW
50007 2 Secondary Voltage Unsigned long - 1 ... 690 V RW
50009 2 Current Transformer Yes / No? Unsigned long - 1 = Yes RW
50011 2 Primary Current Unsigned long - 1 ... 999999 V RW
50013 2 Secondary Current Unsigned long - 1 A, 5 A RW
50017 2 Line Frequency Unsigned long - - RW
50019 2 Zero Point Suppression Float % 0.0 ... 10.0 RW
HIWORD:
Number of subperiods
0 ... 5
1)
50021 2 Subperiod Time Unsigned long -
LOWWORD:
Length of the subperiods:
1, 2, 3, 4, 5, 6, 10, 20, 30,
60
RW
0 = No synchronization
1 = Synchronization
via bus
2 = Synchronization
via DI
50023 2 Sync Unsigned long -
3 = Internal clock
RW
0 = None
1 = Pulse input
2 = On / off-peak
3 = Time
synchronization
4 = Demand sync
50025 2 DI 0.0 Type of Use Unsigned long -
5 = Status
RW
50027 2 DI 0.0 Pulse / Edge Evaluation Unsigned long - 0 = Pulse RW
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