Mitsubishi Electric M800VW Series Programming Manual page 910

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.40 Power Consumption Computation
 Operation details of accumulated power consumption history
When creating the accumulated power consumption history starts, the time stamp (Accumulation start time) is recorded in the
first history data.
After that, the accumulation continues during the power ON.
If the present time reaches the "#1371 PwrIngegIntvl (Power consumption accumulation interval)", it moves on to the next
history data, records the time stamp (Accumulation start time) and performs accumulation.
Note however that if you never turn ON the power before reaching the "#1371 PwrIntegIntvl (Power consumption
accumulation interval)" as "Hist. 5" and "Hist. 7" in the timing chart previously indicated, the accumulated consumption of "0"
is recorded in the history data.
If you never turn ON the power before reaching the "#1371 PwrIntegIntvl (Power consumption accumulation interval)" for two
or more history data in a row, as between "6:00 to 18:00" in the timing chart previously indicated, only the top data ("Hist." 7 in
the timing chart) is recorded.
Changing the accumulated power consumption history-related parameter
If you change the "#1371 PwrIntegIntvl (Power consumption accumulation interval)" or "#1392 StartTimeIPC (Power
consumption accumulation start time)" and then turn OFF/ON the power, the accumulated power consumption history is
cleared, and new accumulated consumption history starts to be created.
If you do not turn OFF/ON the power after changing the parameter, the history is not cleared, and also the parameter change
is not reflected.
If you turn OFF and ON the power with the "#1371 PwrIntegIntvl (Power consumption accumulation interval)" set to "0", new
accumulated power consumption history is not created after the clearance of the existing history.
Changing the date or time of the NC
If you change the time or date of the NC, the accumulation is resumed at the changed time. Thus the accumulated power
consumption can increase or decrease by that amount.
Note that if you change the time or date backward across the time of "#1371 PwrIntegIntvl (Power consumption accumulation
interval)" as illustrated in the figure below, accumulation does not start until the new time or date reaches the time stamp
(Accumulation start time).
So, if accumulated power consumption history is not obtained, the time stamp (Accumulation start time) may be set ahead of
the present time. If you want to perform consumption accumulation properly, change the "#1371 PwrIntegIntvl (Power
consumption accumulation interval)" or the "#1392 StartTimeIPC (Power consumption accumulation start time)", turn OFF
and ON the power to obtain new history.
Change the present time
10:00
Time
Accumulation does not start until the
present time reaches the time stamp.
Time
stamp
14:00 18:00
History
Accumulation restarts after the
present time reaches the time stamp.
889
：Accumulation
22:00
IB-1501668-B