Rockwell Automation 9307 FactoryTalk EnergyMetrix - Manual (Page 73)

4 • Set up Your System Architecture
73
It is important to understand the difference between a Meter and a Device. A Device is a
physical piece of hardware such as a power monitor or programmable controller, or a
software application such as an OPC server. A Meter is a logical, or virtual, device that
functions as a collection of data Tags. Three examples illustrating the importance of this
distinction are:
 A power monitor is a single Device. Each of its status inputs can be used as a Meter by
connecting a pulse type meter and counting pulses.
 A Programmable Controller is a single Device which may include a number of
Meters, each configured as a User Defined Data Source. Some of these Meters may
also be Devices, as where a PLC controller concentrates data from multiple power
monitors for data logging yet each power monitor is also accessible from FactoryTalk
EnergyMetrix RT software for viewing all data, logs, and oscillographs.
Set up a Device-based Meter
Follow these steps to create a device-based Meter.
1. Select the Meters tab in the navigation tree and select a group or domain for the meter
location.
If you need to, create a new group.
2. Select the Meters tab in the detail pane and click the Add a new meter link.