User's Manual

ANSI Electric Meter v3.1 User’s Guide 85
DC or DCX A generic term referring to any Echelon Data Concentrator.
Demand Metering The meter optionally offers various types of demand calculations that
can be performed to measure the peak active and reactive power being
delivered to the system. Demand measurements are useful in that they
provide information on peak usage as opposed to accumulation over
time, and by using averages instead of instantaneous maximum power
values are not impacted by spikes and short surges. Consult Chapter 4
for more information on demand metering.
Device In the context of this document, a device is normally a meter, a Data
Concentrator, or other NES equipment that is designed to communicate
over the power lines using Echelon’s A–Band power line carrier
signaling technology.
Energy The summation of power over time.
Forward (Import)
Energy
Energy delivered to the customer and consumed by the customer.
Key Used to provide secure communication with meters and Data
Concentrators. For details of some of the different types of authentication
keys see LonTalk Authentication Key, Provisioning Key, Read-Only Key,
and Unique Key.
Load Profile The recording of consumption data over a period of time at a particular
meter installation.
LonTalk
Authentication Key
Provides a means of secure authenticated communication over the power
lines between the Data Concentrator and the meter.
Meter A device that measures and records the consumption or usage of a
product or service.
Meter Utility Serial
Number
A unique utility defined serial number of up to 30 characters associated
with each meter.
MEP Multipurpose Expansion Port. The port in the meter that provides the
ability to add a MEP device for an expanded feature.
MEP Device The device that connects to the meter using the MEP port is referred to
as a MEP device. The MEP device is controlled and accessed through
NES in largely the same way as an M-Bus device is. However, there are
several fundamental differences between a MEP device and an M-Bus
device, most notably in the way a MEP device interacts with an Echelon
electric meter.
NES System
Software
Software that is built on Echelon’s Panoramix™ enterprise software
platform. NES System Software supervises and communicates with
Data Concentrators to deliver NES services and serves as the
integration point between the NES system and the Utility Information
Architecture.