Honeywell UDC3300 User Manual

Installation
16 UDC3300 Expanded Model: DC330E User Manual 5/00
Communications Option
There are two types of Communications option available:
• RS422/485/ASCII or Modbus (Model DC330X-XX-1XX or
DC330X-XX-5XX)—Figure 2-16 [also refer to Document #51-51-25-35
(RS422/485 ASCII) or #51-52-25-66 and #51-52-25-70 (Modbus)]
• DMCS (Model DC330X-XX-4XX)—Figure 2-16 (also refer to Document
#82-50-10-23)
13
14
15
16
17
Master
TX+
SHD
TX–
RX+
RX–
Do not mix half and
full duplex wiring.
Do not run these lines in
the same conduit as AC
power
CAUTION
13
14
15
Master
TX–/RX– (D-)
SHD
TX+/RX+ (D+)
ASCII or MODBUS
RS422/485
HALF DUPLEX
To Other
Communication
Instruments
(maximum 31)
SHD
TX+/RX+
TX–/RX–
ASCII
RS422/485
FULL DUPLEX
RX+
SHD
RX–
TX+
TX–
120 Ohm
Resistor
To Other
Communication
Instruments
(maximum 31)
120 Ohm Resistor
on Last Leg
120 Ohm
Resistor
120 Ohm
Resistor
120 Ohm Resistor
on Last Leg
1
1
1
Use shielded twisted pair
cables (Belden 9271
Twinax or equivalent)
DMCS Terminals D+ D-
Figure 2-16 RS422/485/ASCII or Modbus Communications Option Connections

Honeywell UDC3300 Specifications

General

Brand	Honeywell
Model	UDC3300
Category	Controller
Language	English