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© 2011 Schneider Electric. All Rights Reserved.
63230-500-225A2 PowerLogic
TM
Series 800 Power Meter
3/2011 Appendix C—Using the Command Interface
89
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.
• 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.
Figure C–2: Incremental energy example
Start Time
End Time
6
12
93
2
1
10
11
5
4
7
8
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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
PLSD110149