Appendices
BMED Power Meters Modbus Absolute/Net Value Measurement Registers and
74
Building Technologies 125-202
06/06/2017
Appendix B - MD-BMS and MD-BMED Power Meters
Modbus Absolute/Net Value Measurement Registers and
Protocol Commands
Offset refers to a base of 40001.
Table 15: Modbus Register Assignments.
Modbus Offset Register Description
44001 4000 kWh System LSW System Total True Energy LSW (kWh)
44002 4001 kWh System MSW System Total True Energy MSW (kWh)
44003 4002 kW System System Total True Power (kW). Unsigned absolute
(ABS) value of ABS (kW L1) + ABS (kW L2) + ABS (kW
L3).
44004 4003 kW Demand System Max System Maximum Demand (peak demand).
44005 4004 kW Demand System Now Average Power (kW) for most recent demand window.
44006 4005 kW System Max System Maximum Instantaneous kW
(Highest kW sample measured)
44007 4006 kW System Min System Minimum Instantaneous kW
(Lowest 500mS kW sample measured)
44008 4007 kVARh System LSW System Total Reactive Energy LSW (kVARh)
44009 4008 kVARh System MSW System Total Reactive Energy MSW (kVARh)
44010 4009 kVAR System System Total Reactive Power (kVAR). Unsigned
absolute (ABS) value of ABS (kVAR L1) + ABS (kVAR
L2) + ABS (kVAR L3).
44011 4010 kVAh System LSW System Total Apparent Energy LSW (kVAh)
44012 4011 kVAh System MSW System Total Apparent Energy MSW (kVAh)
44013 4012 kVA System System Total Apparent Power (kVA) Unsigned WYE =
(kVA L1) + (kVA L2) + (kVA L3) Delta = SQRT (kW
system ^2 + kVAR system ^2).
44014 4013 Displacement PF System System Displacement Power Factor (PF). Register is
100 × actual value.
44015 4014 Apparent PF System System Apparent Power Factor (PF). Register is 100 ×
actual value.
44016 4015 Amps System Avg Average of all phases.
44017 4016 Volts Line to Line Avg Voltage Line to line (Volts) Average.
44018 4017 Volts Line to Neutral Avg Voltage Line to neutral (volts) Average.
44019 4018 Volts L1 to L2 Individual Phase to Phase Voltages
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