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04/08 UDC3200 Universal Digital Controller Operator Manual 57
3.12 Communications Group
Function
Prompt
Lower Display
Selections or
Range of Setting
Upper Display
Parameter
Definition
Com ADDR
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.
ComSTATE
COMMUNICATIONS SELECTION
DISABLE
DISABLE—Disables RS-485 communications option.
MODBUS
MODBUS—Enables RS-485 Modbus RTU communication port.
IR ENABLE
DISABLE
ENABLE
IR ENABLE–Disable/Enables IR communications port.
ATTENTION If there are no IR communications transactions for
four minutes, then the IR port automatically shuts down. It can be
re-enabled by pressing any key on the front panel.
BAUD
4800
9600
19200
38400
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 BAUD
9600 BAUD
19200 BAUD
38400 BAUD
TX DELAY
1 to 500
milliseconds
TX DELAY—Configurable response-delay timer allows you to force
the instrument to delay its response for a time period of from 1 to
500 milliseconds compatible with the host system
hardware/software.
WS FLOAT
FP_B
FP_BB
FP_L
FP_LB
Defines word/byte order of floating point data for communications.
Byte values:
0 1 2 3
seeeeeee emmmmmmm mmmmmmmm mmmmmmmm
Where:
s = sign, e = exponent, m = mantissa bit
0 1 2 3
1 0 3 2
3 2 1 0
2 3 0 1
SHED ENAB
DISABLE
ENABLE
SHED ENABLE—Disables/enables shed functionaliy. Applies to
Modbus protocol only.
SHEDTIME
0 to 255
SHED TIME—The number that represents how many sample
periods there will be before the controller sheds from
communications. Each period equals 1/3 seconds; 0 equals No
shed.
Note: If ComSTATE is set to MODBUS or MB3K and if
SHEDENAB is set to DISABL, Shed Time will not be configurable.
SHEDMODE
SHED CONTROLLER MODE AND OUTPUT LEVEL—Determines
the mode of local control you want when the controller is shed from
the communications link.