ABB Cylon MATRIX-2 Series User Manual

Cylon® MATRIX-2 Series | Installation
©ABB 2023 All Rights Reserved.
Subject to change without notice
WWW.CYLON.COM
8
MAN0155 rev 4
ATTACH RS-485 COMMUNICATION WIRES TO THE MS/TP SUBNET PORT
Wiring the RS-485 network involves connecting the A+ (95) and B- (96) terminals in a daisy-chained
configuration. One end of the network will be connected to the Fieldbus of the Network-level controller or
BACnet® router. At the other end of the network, the last device must be “terminated” by either installing a
100 Ω … 120 Ω resistor or, if the last device is a MATRIX-2, users can switch the MS/TP Subnet terminator
switch (located beside the MS/TP port) towards the icon. This will effectively terminate the network.
The shield (screen) must be carried through the entire network, and must be grounded at one point on the
network as shown below:
Network-level Controller or
Router
MATRIX-2
Network Segment
end
- - - - - -
MATRIX-2
Network end
Shield connected at end
of network only
Network
Termination
switch set to
OFF
Shield continuous
throughout the
network
Network cable
segment daisy-chained
to next device
Network
Termination switch
set to ON at end of
network
Shield connected to
earth at one end of
network only
Note: If the RS-485 network is wired to an eSC, then the shield will be grounded at the eSC.

ABB Cylon MATRIX-2 Series Specifications

General

Brand	ABB
Model	Cylon MATRIX-2 Series
Category	Industrial Electrical
Language	English