Honeywell UDC2500 - Manual (Page 87)

Configuration
4/07 UDC2500 Universal Digital Controller Product Manual 73
3.13 Communications Group
Introduction
The Communications group lets you configure the controller to be connected to a host
computer via Modbus® or Ethernet TCP/IP protocol. Two parameters in this Group,
Communications Station Address and TX Delay, are also used for IR communications.
No other parameters affect IR communications.
Introduction
A controller with a communications option looks for messages from the host computer. If
these messages are not received within the configured shed time, the controller will
SHED from the communications link and return to stand-alone operation. You can also
set the SHED output mode and setpoint recall, and communication units.
Up to 99 addresses can be configured over this link. The number of units that can be
configured depends on the link length, with 31 being the maximum for short link lengths
and 15 drops being the maximum at the maximum link length.
Function Prompts
Table 3-14 Communications Group (Numeric Code 1000) Function Prompts
Function Prompt
Lower Display
Selection or Range of
Setting
Upper Display
English Numeric
Code
English Numeric
Code
Parameter
Definition
ComADR 1001 1 to 99 COMMUNICATIONS STATION ADDRESS—This
is a number that is assigned to a controller that is
to be used with the communications option. This
number will be its address. This parameter is also
used for the IR communications link.
COMSTA 1002
DIS
MODB
ETHR 0
1
2
COMMUNICATIONS SELECTION
DISABLE—Disables the communications option
MODBUS—Enable Modbus RTU communications
ETHERNET—Enable Ethernet Communications
IRENAB 1003 DIS
ENAB
0
1 INFRARED COMMUNICATIONS – Enables/
Disables the IR Port.
BAUD 1004 BAUD RATE is the transmission speed in bits per
second. This value is used for both RS-485 and IR
Communications, but for IR Communications,
values below 19200 baud are interpreted as being
19200 baud.
4800
9600
19200
38400
0
1
2
3 4800 BAUD
9600 BAUD
19200 BAUD
38400 BAUD