Figure 2-18 shows the wiring connections for the DMCS Communications

option (Model DC330X-XX-4XX).

Figure 2-18 DMCS Communications Option Connections

 

DMCS

 

 

 

Communications

DMCS is a proprietary

 

 

Master

 

 

protocol. Host computer

 

 

 

L1

 

 

must be either the

 

 

Honeywell Gateway 500

L2/N

12

 

or LPM Series 9000.

 

 

22

SHD

1

 

13

SHD

 

23

D +

D +

 

14

 

24

D

D

 

15

120 Ohm

25

16

 

 

Resistor

26

17

 

 

27

 

Do not run these

 

 

lines in the same

 

 

 

 

conduit as AC power

1 Use shielded twisted pair cables

 

 

 

(Belden 9271 Twinax or equivalent)

To Other

 

 

 

 

 

 

Communication

 

 

*DMCS: Maximum 31 drops.

Instruments*

120 Ohm Resistor

 

 

 

on Last Leg

24170

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4/00

UDC 3300 Controller Product Manual

31

Page 43
Image 43
Honeywell UDC 3300 manual Master, 120 Ohm, Resistor