Viconics VT7200 (Echelon) Integration Manual Manual de usuario descargar pdf (Pagina 22)

Configuration Property Objects

The following SNVT and UNVT should be typically used for configuration purposes:

 nciCfg1FcuZn;

 nciCfg2FcuZn;

 nciSetpoints;

Wiring Guide

Overview

For clarity we will use the term “Device” to represent any product with an active Echelon network connection,

including Viconics and non-Viconics controllers.

Summary Specifications:

Parameter Details

Network Wiring 24 to 16AWG, twisted pair

Maximum total wire length

1600 feet (500 meters) in free topology

Maximum device-to-device distance 1600 feet (500 meters) in free topology

Polarity Polarity insensitive

Multi-drop Free Topology

Termination for Free Topology Network Segment

One RC network with Ra = 52.3Ω±1%, 1/8W

Termination for Doubly Terminated Bus Network

Segment

Two RC network with Ra = 105Ω±1%, 1/8W

Number of transceivers per segment Up to 64

Baud rate 78000 bits per second

Network segment length varies depending on wire type.

Table 1: Summary of Specifications for a Viconics’ LON Network

Network Configuration

The Echelon network is designed to support free topology wiring and will accommodate bus, star, loop or any of

these topologies. Echelon devices can be located at any point along the network wiring.

Figures 3.1 to 3.5 present five different network topologies. The actual termination circuit will vary by application.

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Viconics VT7200 (Echelon) Integration Manual Manual de usuario Pagina 22