CHAPTER 7: MODBUS COMMUNICATIONS MODBUS MEMORY MAP
PQM POWER QUALITY METER – INSTRUCTION MANUAL 7–93
33 Phase C kW –32500 to +32500 1 kW 0
34 Phase C kvar –32500 to +32500 1 kvar 0
35 Phase C kVA 0 to 65400 1 kVA 0
36 3 Phase +kWh Used 0 to 65400 1 kWh 0
37 3 Phase +kvarh Used 0 to 65400 1 kvarh 0
38 3 Phase -kWh Used 0 to 65400 1 kWh 0
39 3 Phase -kvarh Used 0 to 65400 1 kvarh 0
40 3 Phase kVAh Used 0 to 65400 1 kVAh 0
41 Phase A Current Demand 0 to 7500 1 A 0
42 Phase B Current Demand 0 to 7500 1 A 0
43 Phase C Current Demand 0 to 7500 1 A 0
44 Neutral Current Demand 0 to 7500 1 A 0
45 3 Phase kW Demand –32500 to +32500 1 kW 0
46 3 Phase kvar Demand –32500 to +32500 1 kvar 0
47 3 Phase kVA Demand 0 to 65400 1 kVA 0
48 3 Phase Current THD 0 to 1000 1 0.1 × %0
49 Three Phase Voltage THD 0 to 1000 1 0.1 × %0
50 Phase A Current THD 0 to 1000 1 0.1 × %0
51 Phase B Current THD 0 to 1000 1 0.1 × %0
52 Phase C Current THD 0 to 1000 1 0.1 × %0
53 Voltage Van THD 0 to 1000 1 0.1 × %0
54 Voltage Vbn THD 0 to 1000 1 0.1 × %0
55 Voltage Vcn THD 0 to 1000 1 0.1 × %0
56 Voltage Vab THD 0 to 1000 1 0.1 × %0
57 Voltage Vbc THD 0 to 1000 1 0.1 × %0
58 Neutral Current THD 0 to 1000 1 0.1 × %0
59 Serial Control –32500 to +32500 1 --- 0
Table 7–12: Analog Output Parameter Range for Serial Ports (Sheet 2 of 2)
NO. ANALOG OUT PARAMETER RANGE STEP UNITS/
SCALE
DEFAULT
*Due to the fact that –0 and +0 both exist for power factor, the value stored in the PQM serial register is the
opposite of the value shown on the display.
Example: If the range 0.23 lead (–0.23) to 0.35 lag (+0.35) is required, –77 (–100+23)and +65 (100–35) must be
sent.
Courtesy of NationalSwitchgear.com
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