Calculating energy log depth – Rockwell Automation 1408-EMxx PowerMonitor 1000 Unit User Manual
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Rockwell Automation Publication 1408-UM001D-EN-P - September 2013
Chapter 5 Explicit Messaging
Example 2: Read Min/Max Log for Average Current
This example explains how to configure the Log Request Table to read the Min/
Max log for Average Current.
Refer to Min/Max Parameter List on page 103
for the specific record to return.
In this example, Average Current is record 4.
1. Create a write message to write the following values to the Log Request
Table.
2. Create a read message to read the values in the Min/Max Log table.
Calculating Energy Log Depth
How long the Energy Log takes to fill may be as little as 288 hours or as long as
three years depending on how you configure the log rate. The Energy records
maximum depth is 17280 records that covers the following:
•
Status 1 and 2 counters
•
Real, Reactive, and Apparent Demand
•
Real, Reactive, and Apparent Energy
•
Demand Power Factor
Element
Item Name
Value
0
Selected Log
2
1
Chronology of Auto Return Data
0
2
Mix/Max Record to be Returned
4
3
Number of Unit Status Records
0
4
Number of Energy Log Records
0
5
Number of Time of Use Log Records
0
6
Number of Load Factor Log Records
0
7
Load Factor or TOU Record to be Returned
0