
60 UDC 6300 Process Controller Product Manual 1/03
3.18 Communications Group
Introduction
This option allows the controller to be connected to a host computer by
way of various communications options.
The controller looks for messages from the computer at regular intervals.
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.
The device address, parity, baud rate, Computer Setpoint, Units, Ratio,
and Bias are configurable depending on the protocol you are using.
You can also set the SHED output mode and setpoint recall, and
communication units.
Up to 99 addresses can be configured over this link.
485TDC option
Up to four RS485 link addresses are allowed when the communication
option is selected as 485TDCSDI. One PV Point and one OP point are
required to be configured per loop when the UDC6300 TDC integration
schematics are to be used for Operator Interface from the TDC Universal
Station. Remote Cascade Option and overall mode of Operation can also
be configured.
Function prompts
Table 3-15 lists all the function prompts in the “Commun” Set Up group.
Table 3-15 Commun Group Function Prompts
Function Prompt
Lower Display
Function
Name
Selections or
Range of Setting
Upper Display
Factory
Setting
COM STATE
Communications Selection DISABL 485MODRTU
485DMCS 485TDCSDI
422ASCII 485BSAP
DISABL
ADDRESS
485DMCS, 422ASCII,
485MODRTU, 485BSAP
Loop 1 Communications
Station Address
1 to 99 0
ADDRESS2
485ASCII only
Loop 2 Communications
Station Address
1 to 99 0
PV1 SLOT
485TDCSDI only
Loop 1 Process Variable
(PV) Point Address
0 to 16 0
OP1 SLOT
485TDCSDI only
Loop 1 Output (OP) Point
Address
0 to 16
PV2 SLOT
485TDCSDI only
Loop 2 Process Variable
(PV) Point Address
0 to 16
OP2 SLOT
485TDCSDI only
Loop 2 Output (OP) Point
Address
0 to 16
PARITY
485ASCII only
Parity ODD
EVEN
ODD
BAUD RATE
485 ASCII only
Baud Rate
NOTE: If you make a change in
Baud Rate, cycle the power supply
after you make the change.
300 1200 4800 19200
600 2400 9600 38400
300
FRAMING
422ASCII, 485MODRTU
only
Framing DEFAULT 50MSEC 10MSEC
100MSEC 25MSEC
XMT DELAY
Transmission Delay NONE 20MSEC 40MSEC
10MSEC 30MSEC 50MSEC
Table 3-15 continued on next page
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