Honeywell NETAXS NX4L1

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RS-485 Wiring for a Mixed Loop
Figure B-3: RS-485 Wiring for a Mixed Loop
Using twisted pair, the first pair (usually red and black wires) is connected to 485+
and 485– respectively. The second pair (usually green and white) are twisted together
and connected to COM with the exception of the NetAXS-123 controller where the
common is bypassed.
Note: In the above figure, the white wire is colored purple for easy viewing.
Ground Shield
DO NOT CONNECT
OR GROUND SHIELD
DO NOT CONNECT
OR GROUND
SHIELD
Ground Shield
123
+485 (A) –485 (B)
COM
NetAXS-4
123
+485 (A) –485 (B)
COM
NetAXS-4
VDC Out
+485 (A)
–485 (B)
COM
+24 VDC In
1
2
3
4
5