63230-500-225A2

PowerLogicTM Series 800 Power Meter

3/2011

Appendix C—Using the Command Interface

Using Incremental Energy

Incremental energy accumulation begins at the specified start time and ends at the specified end time. When the start time arrives, a new incremental energy period begins. The start and end time are specified in minutes from midnight. For example:

Interval: 420 minutes (7 hours)

Start time: 480 minutes (8:00 a.m.) End time = 1440 minutes (12:00 p.m.)

The first incremental energy calculation will be from 8:00 a.m. to 3:00 p.m. (7 hours) as illustrated in Figure C–2. The next interval will be from 3:00 p.m. to 10:00 p.m., and the third interval will be from 10 p.m. to 12:00 p.m. because 12:00 p.m. is the specified end time. A new interval will begin on the next day at 8:00 a.m. Incremental energy accumulation will continue in this manner until the configuration is changed or a new interval is started by a remote master.

Figure C–2: Incremental energy example

PLSD110149

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1st Interval (7 hours) = 8:00 a.m. to 3:00 p.m

2nd Interval (7 hours) = 3:00 p.m. to 10:00 p.m 3rd Interval (2 hours) = 10:00 p.m. to 12:00 p.m

Set up—To set up incremental energy:

1.Write command code 9020 to register 8000.

2.In register 3230, write a start time (in minutes-from-midnight).

3.For example, 8:00 am is 480 minutes.

4.In register 3231, write an end time (in minutes-from-midnight).

5.Write the desired interval length, from 0–1440 minutes, to register 3229.

6.If incremental energy will be controlled from a remote master, such as a programmable controller, write 0 to the register.

7.Write 1 to register 8001.

8.Write command code 9021 to register 8000.

Start—To start a new incremental energy interval from a remote master, write command code 6910 to register 8000.

© 2011 Schneider Electric. All Rights Reserved.

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Schneider Electric PM820, PM870, PM810, PM850 manual Using Incremental Energy, Figure C-2 Incremental energy example