Rockwell Automation 1408-EMxx PowerMonitor 1000 Unit - Manual (Page 46)

46 PowerMonitor 1000 Unit
Rockwell Automation Publication 1408-IN001E-EN-P - September 2013
In this example, the NetID is 192.1.1.0 and the HostID is 0.0.0.207. The relationship between
NetID and HostID depends on the IP address class, the discussion of which is beyond the scope
of this document (the example uses a Class C IP address). Devices on the same subnet can
communicate directly; devices on different subnets may communicate with each other only
through a gateway or router.
The Gateway IP address defines the address of the gateway or router on the unit’s subnet that is
used to route messages to other subnets for wide-area networking. The default is 128.1.1.1.
Energy Metering
This function applies to catalog numbers 1408-EM1, 1408-EM2, and 1408-EM3.
Metered Parameters
The power monitor calculates and returns the totalized energy values including the following:
• GWh forward, GWh reverse, and GWh net
• kWh forward, kWh reverse, and kWh net
• GVARh forward, GVARh reverse, and GVARh net
• kVARh forward, kVARh reverse, and kVARh net
• GVAh and kVAh
Each time the kWh value rolls over to zero the GWh value increments by one. The other pairs of
values operate in the same way.
Energy results (kWh, kVARh, and kVAh) roll over to 0 at a value of
9,999,999,999,999 or 10
12 -1.
Setup
Only basic analog input setup is required for energy metering.
Results
Energy metering results may be viewed using the following methods:
• Web interface
• LCD screen
• Communication
Energy results are not available via the HyperTerminal communication tool.
EXAMPLE A large energy value could be displayed as 123,456,789,234.567 kWh where 123,456 is the GWh metering
result and 789,234.567 is the kWh metering result.