Introduction - ABB SROUT Technical Reference Manual

SROUT
1.
4
Router Option Card for Lon® Star Coupler
RER 111

Introduction

The router option card is designed to be used within the LON
111. This device is not a "stand-alone" device.
The router option card connects two different communication channels and forwards
LonTalk™ messages between them. One channel is the open collector bus of the
RER 111 unit, while the other can be a fibre-optic type or a transformer-isolated
twisted pair type channel with a speed of 78 kb/s or 1.25 Mb/s.
The router option card contains 9-pin D-type connector for the twisted pair interface
and a pair of fibre-optic transceivers.
Two types of transceiver pairs are available:
- ST-type glass fibre-optic transceiver
- snap-in-type plastic fibre-optic transceiver
The router option card can be used for improving network performance by dividing
a large communication network into smaller sub-groups of nodes, or it can be used
as media converter to twisted pair media.
Fibre-optic connection
Fibre-optic connection
to bay level devices
SUBNET 2
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MicroSCADA
Router option card
SROUT-C-
SUBNET 1
Twisted pair
connection
Devices with transformer isolated
TP transceivers (communication
speed 1.25 Mb/s or 78 kb/s)
1MRS 750109-MUM
®
Star Coupler RER
srout_1
ABB Automation