Data Wires Termination Jumper; Ms/Tp 2 Wire Termination; Ms/Tp Rj-45 Termination - Delta Controls DZNR-768 Installation Manual

Repeater configuration

Data wires termination jumper

The segment data wires are terminated differently for MS/TP 2 WIRE and for MS/TP RJ-45.
See the corresponding section below for a description of the proper termination.
Proper termination of the network data wires ensures network stability and helps to prevent
damage to controllers during high electrical activity.

MS/TP 2 WIRE termination

The data wires at both ends of an MS/TP 2 WIRE segment must be terminated to ensure
reliable operation. The DZNR provides a built-in jumper-selectable termination for the data
wires of each segment.
For MS/TP 2 WIRE, set the jumper for the segment to the TERM position. Terminate the data
wires at the last node on the segment with a TRM-768. The following diagram shows the
proper termination for both the data wires and the shield.
GND
Shield
+
TRM-768

MS/TP RJ-45 termination

For MS/TP RJ-45, remove the jumper for the segment or set it to the non- TERM position.
Devices that use MS/TP RJ-45 networking include built-in distributed termination components.
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Keep stub cable length
as short as possible
Last node
on segment
-
+
RS-485 port
Shield is not grounded
at this end of segment
DZNR with TERM
jumper set to enable
built-in segment
termination
-
+
MS/TP 2 WIRE port
DZNR-768 Revision 1.2 Installation Guide
Document Edition 1.5