Aclara Power-Line Systems Inc. Y72553-1 사용자 설명서

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TWACS System Overview

The TWACS system is a fixed network, utility communication system. Running at 

a centralized location, the TWACS operating software communicates with end 

points, such as meters, by way of existing power lines. The TWACS system allows 

full two-way access to and from the consumer’s meter, providing communication 

and control features for the Utility.  

The TWACS system consists of three levels of components (see Figure 1.1):

• Master Station (MS)

The Master Station TWACS operating software, either TWACS Net Server 

(TNS) or TWACS® Network Gateway (TWACS NG), is the chief 

component of the entire Two-Way Automatic Communication System 

(TWACS). The Master Station software manages all collected metering and 

interval data as well as the connection between the utility and the consumer’s 

premises. TNS is DCSI’s standard solution while TWACS NG is available 

for very large deployments requiring a high volume of readings for 

time-of-use or critical peak pricing programs.
The primary functions of TNS and TWACS NG are:

Managing the TWACS system communication network.

Supporting applications such as metering, troubleshooting, outage 

detection, and load control.

Collecting remote meter data for the database server, which forwards the 

data to a third-party utility software application.

TNS and TWACS NG are part of the corporate enterprise network. The 

system is based on the Oracle® database, which is an open system, meaning 

it can interact and inter-operate with other applications on local and remote 

systems, on a variety of hardware platforms, and in a number of software 

environments. The system provides the user interfaces for configuring the 

necessary parameters to retrieve and send data.

• Substation Communications Equipment (SCE)

• Remote Communications Equipment (RCE)

This is the level at which the meter transponder resides within the electric 

meter.

As shown in Figure 1.1, outbound messages originate in the Master Station and 

pass through the substation to the transponder (RCE). Inbound meter data is sent 

from the transponder to the SCE, where it is decoded and then sent to the Master 

Station for analysis or bill file creation.

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