Siemens MD-BMS - Page 78

Appendices
Appendix B
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MD
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BMS and MD
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BMED Power Meters Modbus Absolute/Net Value Measurement Registers and
Protocol Commands
78
Building Technologies 125-202
06/06/2017
Modbus Offset Register Description
44616 4615 Volts Multiplier Decimal Multiply volts values by (this scalar/1000+Volts
Multiplier Integer). Use with Step-down Transformer.
Affects all parameters that use volts (such as kW).
50100 10099 CT1 Integer Integer part of CT1
50101 10100 CT1 Decimal Fractional part of NV_CT1
50125 10124 CT1 Type Select 1 = mV or 2 = Rogowski CT1s.
50199 10198 CT1 Phase Shift Phase Shift × 100 +/-
50200 10199 CT2 Integer Integer part of CT2
50201 10200 CT2 Decimal Fractional part of NV_CT2
50225 10224 CT2 Type Select 1 = mV or 2 = Rogowski CT2s.
50299 10298 CT2 Phase Shift Phase Shift × 100 +/-
50300 10299 CT3 Integer Integer part of CT3
50301 10300 CT3 Decimal Fractional part of NV_CT3
50325 10324 CT3 Type Select 1 = mV or 2 = Rogowski CT3s.
50399 10398 CT3 Phase Shift Phase Shift × 100 +/-
Table 17: Writable Registers.
Modbus Offset Register Description
40129 128 Synchronize Register Multiple MD Model Power Meter’s synchronization
register.
44066 4065 Clear Accumulated
Measurements
Writing 1234 resets all 'C' registers, accumulated
Power Meter data (kWh, kWh, and so on) stored in
flash to CAM Default value.
Table 18: Device Registers.
Modbus Offset Register Description
44201 4200 Model Number 1st 2 bytes Model Name 10 bytes (ASCII Alphanumeric)
44202 4201 Model 2 "
44203 4202 Model 3 "
44204 4203 Model 4 "
44205 4204 Model Number last 2 bytes "
44206 4205 Serial Number 1st 2 bytes Serial Number 10 bytes (ASCII Alphanumeric)
44207 4206 Serial 2 "
44208 4207 Serial 3 "
44209 4208 Serial 4 "