Attach Rs-485 Communication Wires To The Ms/Tp Subnet Port - ABB Cylon MATRIX-2 Series User Manual

ATTACH RS-485 COMMUNICATION WIRES TO THE MS/TP SUBNET PORT

Wiring the RS-485
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
switch (located beside the
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
Termination
Shield connected at end switch set to
of network only
Note: If the RS-485 network is wired to an eSC, then the shield will be grounded at the eSC.
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network involves connecting the
MS/TP port) towards the
Network Segment
MATRIX-2
end
Network
Shield continuous
throughout the
OFF network
Cylon® MATRIX-2 Series |
(95) and (96) terminals in a daisy-chained
A+ B-
icon. This will effectively terminate the network.
- - - - - -
Network cable Termination switch
segment daisy-chained set to ON at end of
to next device
Installation
MS/TP Subnet terminator
MATRIX-2 Network end
Network
Shield connected to
earth at one end of
network network only
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