Bulletin No. 3020IM9503R6/98 Power Meter
December 1998 Appendix F—Register List
1998 Square D All Rights Reserved 93
Reg. No. ➀ Register Name Units Range
1746 ➁ Predicted Real Power Demand, kW/Scale Factor E 0 to +/- 32,767
3-Phase Total
1747 ➁ Predicted Reactive Power Demand, kVAr/Scale Factor E 0 to 32,767
3-Phase Total
1748 ➁ Predicted Apparent Power Demand, kVA/Scale Factor E 0 to 32,767
3-Phase Total
1749 Unused
1750 Unused
1751 Unused
1752 Unused
Reg. No. ➀ Register Name Units Range
DATE/TIME COMPRESSED FORM (3 Registers) ➂
*The date and time in registers 1800–1802 are stored as follows. Other dates and times (through
register 1877) are stored in an identical manner. Set date/time by writing to registers 1842–1844.
Register 1800, Month (byte 1) = 1–12, Day (byte 2) = 1–31
Register 1801, Year (byte 1) = 0–199, Hour (byte 2) = 0–23,
Register 1802, Minutes (byte 1) = 0–59, Seconds (byte 2) = 0–59. The year is zero based on the year
1900 in anticipation of the 21st century, (e.g., 1989 would be represented as 89 and 2009 would be
represented as 109).
1800– Last Restart Month, Day, Yr, *See note above
1802 Date/Time Hr, Min, Sec
1803– Date/Time Month, Day, Yr, Same as
1805 Demand of Hr, Min, Sec Registers
Peak Current 1800–1802
Phase A
1806– Date/Time Month, Day, Yr, Same as
1808 Demand of Hr, Min, Sec Registers
Peak Current 1800–1802
Phase B
1809– Date/Time Month, Day, Yr, Same as
1811 Demand of Hr, Min, Sec Registers
Peak Current 1800–1802
Phase C
1812– Date/Time of Peak Month, Day, Yr, Same as
1814 Demand (Average Hr, Min, Sec Registers
Real Power) 1800–1802
➀ These registers can be used with POWERLOGIC, Modbus, or Jbus protocols. Although POWERLOGIC
and Jbus protocols use a zero-based register addressing convention and Modbus uses a one-based
register addressing convention, the power meter, when configured for Modbus communications,
automatically compensates
for the Modbus offset of one. Regard all registers as holding registers where a
30,000 or 40,000 offset can be used (e.g., Current, Phase A = 31,003 or 41,003).
➁ PM-650 only.
➂ PM-620 and PM-650 only.
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