Figure 2-20 Rs-422/485 Communications Option Connections; Figure 2-21 Ethernet Communications Option With Adaptor Board - Honeywell UDC3500 Product Manual

Installation
4 SHLD 4 SHLD 4 SHLD 4 SHLD 4 SHLD
1 Do not run the communications lines in the same conduit as AC power. 1 Do not run the communications lines in the same conduit as AC power.
2 Use shielded twisted pair cables (Belden 9271 Twinax or equivalent). 2 Use shielded twisted pair cables (Belden 9271 Twinax or equivalent).

Figure 2-20 RS-422/485 Communications Option Connections

RS-422/485 connections must be "daisy-chained," T-drop connections are not allowed.

Figure 2-21 Ethernet Communications Option with Adaptor Board

Instruments equipped with the Ethernet Communications Option come with an Ethernet
Adaptor Kit. To use this kit, first remove the four screws on your instrument from
Terminal Block positions 24 through 27. Place the Ethernet Adaptor Board on to the
terminal block as shown and then secure it in place with the four long screws provided in
the kit. Route the long wire on the Ethernet Adaptor Board over to Terminal #4 on your
instrument. The RJ-45 connector on the Ethernet Adaptor Board will allow you to use a
38
UDC3500 UDC3500 UDC3500 UDC3500
SHLD SHLD
26 D+ (B) 26 D+ (B) 26 D+ (B) 26 D+ (B)
D+ D+
27 D– (A) 27 D– (A) 27 D– (A) 27 D– (A) D– D–
TO OTHER TO OTHER
COMMUNICATION COMMUNICATION
CONTROLLERS CONTROLLERS
D– D–
120 OHMS ON LAST LEG 120 OHMS ON LAST LEG
Maximum Distance 4000 feet. Maximum Distance 4000 feet.
10
11
L1
12
L2/N
13
4
14
5
15
6
16
7
17
8
9
18
Tie Wraps (2)
UDC3500 Universal Digital Controller Product Manual
COMMUNICATION MASTER COMMUNICATION MASTER
D+ (B) SHLD D+ (B) SHLD D– (A) D– (A)
1 1 1 2 2
120 OHMS 120 OHMS
Connect shield Connect shield
to ground at one to ground at one
end only. end only.
D+ D+
28
19
Ethernet
29
20
Adaptor
30
21
31
22
32
23
33
24
Ethernet
Cable To
34
25
Hub or
35
26
36
27
24
27
3/07