2.5
Wiring Diagrams
Communications option
connections
Figure 2-4
UDC2300 Connections
D+
13
14
10/00
RS422/485 ASCII Communications Option Product Manual
COMMUNICATION MASTER
D–
TO OTHER
COMMUNICATION
CONTROLLERS
D–
D+
120 OHMS ON LAST LEG
(A)
(RTN)
(B)
D+
SHLD
D–
2
120 OHMS
1
1
Connect shield wires together with Honeywell
supplied crimp part number 30755381-001
2
Do not run these lines in the same conduit as AC power.
21758B.ppt
11