Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 178)

178 Publication 1404-UM001F-EN-P - November 2009
Chapter 8 Advanced Features
Reading the Load Factor Log
To select the Read-back mode or record, an auto reset/store day of
the month, or issuing a manual reset/store command, perform a table
write to the
Load Factor Log Configuration/Read-back Select table.
Load factor log data is not available via Modbus communication. This
read/write table contains six integer elements as follow:
•
Password: required for changing the auto clear/reset day or
manual clear/reset command. Use -1 if only selecting read-back
mode or record. Range 0000…9999, default 0000. Returns -1
•
Record select: selects the next read-back record
•
Read-back mode: 0 = auto-increment record number after each
read, 1 = manual increment. Auto-increment not supported in
DeviceNet and Ethernet optional communication.
•
Manual clear/reset command: 0 = do nothing, 1 = manual
clear/reset command (see above)
•
Auto clear/reset day: Selects the day of month for automatically
storing and clearing the current in-process record. Range 0…31;
0 disables automatic clear/reset, 1…28 selects day of month,
29…31 selects last day of month
•
Reserved: reserved element must be 0 on a write, returns 0
The results table is the Load Factor Log Results table. You may read
the in-process Record 0 or one of the 12 logged records. This table
contains the following 14 floating-point elements:
•
Peak demand power: expressed in watts. Range 0.0…999.9*10
21
•
Average demand power: expressed in watts.
Range 0.0…999.9*10
21
•
Load factor power: expressed in per cent. Range 0.0…100.0
•
Peak demand reactive power: expressed in VARs.
Range 0.0…999.9*10
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•
Average demand reactive power: expressed in VARs.
Range 0.0…999.9*10
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•
Load factor reactive power: expressed in per cent.
Range 0.0…100.0
•
Peak demand apparent power: expressed in VARs.
Range 0.0…999.9*10
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•
Average demand apparent power: expressed in VARs.
Range 0.0…999.9*10
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•
Load factor apparent power: expressed in per cent.
Range 0.0…100.0
•
Peak demand current: expressed in VARs. Range 0.0…999.9*10
21