Configuration
Function Prompt Selections or
Parameter
Lower Display
Range of Setting
Upper Display
Definition
SHED SP
SHED SETPOINT RECALL
Note: If SHEDENAB=DISABLE, this prompt will not
be configurable.
TO LSP
TO LSP—Controller will use last local or remote
setpoint used.
TO CSP
TO CSP—When in “slave” mode, the controller will
store the last host computer setpoint and use it at
the Local setpoint. When in “monitor” mode, the
controller will shed to the last instrument Local or
Remote setpoint used, and the LSP is unchanged.
UNITS
ENG
PERCENT
COMPUTER SETPOINT UNITS
ENG — Engineering units
PERCENT — Percent of PV range
CSP RATO
–20.0 to 20.0
COMPUTER SETPOINT RATIO—Computer
setpoint ratio.
CSP BIAS
–999. to 9999.
(engineering units)
COMPUTER SETPOINT BIAS—Computer setpoint
bias in Engineering Units.
LOOPBACK
LOCAL LOOPBACK tests the RS-485
communications port. It is not used for any other
communications port.
DISABLE
DISABLE—Disables the Loopback test.
ENABLE
ENABLE—Allows loopback test. The instrument
goes into Loopback mode in which it sends and
receives its own message. The instrument displays
PASS or FAIL status in the upper display and
LOOPBACK in the lower display while the test is
running. The instrument will go into manual mode
when LOOPBACK is enabled with the output at the
Failsafe value. The test will run until the operator
disables it here, or until power is turned off and on.
ATTENTION The instrument does not have to be
connected to the external communications link in
order to perform this test. If it is connected, only one
instrument should run the loopback test at a time.
The host computer should not be transmitting on the
link while the loopback test is active.
86 UDC3200 Universal Digital Controller Product Manual 12/04
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