Network layout
Page 16 of 28
DZNR-768 Revision 1.2 Installation Guide
Document Edition 1.5
MS/TP 2 WIRE segment
When using a MS/TP 2 WIRE port for twisted pair wiring, follow the wiring conventions
described in the Delta Controls Wiring and installation Guidelines document. The guidelines
include the following cable specifications:
•
22-24 AWG twisted pair
•
100-120 ohms impedance
•
17 pF/ft or lower capacitance
•
Braided or aluminum foil shield
Wire the controllers on the segment in a daisy-chain fashion. Attempting to connect them
using a starred or bus configuration will cause problems on the segment. The maximum
length for each MS/TP 2 wire segment is 4000 ft (1220 m).
Shield continuity and termination
For MS/TP 2 WIRE segments, the shield must be continuous from node to node and be
terminated as shown in the diagram found here:
Data wires termination jumpers
Do not connect the shield to the ground lug.
Summary of Contents for DZNR-768
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