User's Manual

DRAFT
TWACS
®
- ORION
®
for CENTRON
®
Meter User Guide 51
Substation Communications Equipment (SCE)
The middle tier of the TWACS system hierarchy, consisting of all TWACS substation
equipment (CRU, OMU, IPU, and MTU). The SCE transmits and receives data between
CCE and RCE.
time-of-use (TOU)
A multiple tiered billing technique based on when the consumer uses the energy.
TNS
See TWACS Net Server.
TOU
See time-of-use
transponders
Two-way field devices that can receive and send messages to and from the substation.
TWACS
See Two-Way Automatic Communication System.
TWACS Net Server (TNS)
Chief component of the entire Two-Way Automatic Communication System. Manages
all collected metering and interval data as well as the connection between the utility and
the consumer’s premises.
Two-Way Automatic Communication System (TWACS)
A patented technology that allows the utility to send and retrieve information to and from
meters and other devices using the utility’s power lines as a communication network.
Ultra High Frequency (UHF)
A frequency range in the radio frequency spectrum between 300 MHz and 3.0 GHz.
window
The amount of time in minutes available after the delay has occurred for the SCE to send
a date/time command.