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4/00 UDC 3300 Process Controller Product Manual 137
Lower Display
Prompt
Upper Display
Range of Setting
or Selection
Parameter
Definition
SHEDMODE
LAST
TOAUTO
FSAFE
To MAN
SHED CONTROLLER MODE AND OUTPUT LEVEL—
Determines the mode of local control you want when the
controller is shed from the communications link.
Note: If COMSTATE = MODBUS or MB3K and if
SHEDENAB=DISABLE, this prompt will not be
configurable.
LAST—SAME MODE AND OUTPUT—The controller will
return to the same mode (manual or automatic) at the
same output level that it had before shed.
ToAUTO—AUTOMATIC MODE, LAST SP—The controller
will return to the automatic mode and the last setpoint
used before shed.
FSAFE—MANUAL MODE, FAILSAFE OUTPUT—The
controller will return to manual mode at the output value
selected at Control prompt FAILSAFE.
TO MAN—MANUAL MODE, SAME OUTPUT—The
controller will return to manual mode at the same output
level that it had before shed.
SHED SP
TO LSP
TO CSP
SHED SETPOINT RECALL
Note: If COMSTATE = MODBUS or MOD3K and if
SHEDENAB=DISABLE, this prompt will not be
configurable.
TO LSP—Controller will use last local or remote setpoint
used.
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 UDC Local or Remote setpoint used, and the
LSP is unchanged.
UNITS
(RS422/485 ASCII only)
PERCNT
ENG
COMMUNICATION UNITS—This selection determines
how the controller values are expressed (on both loops)
during communications.
PERCENT OF SPAN
ENGINEERING UNITS
CSP RATO
–20.0 to 20.0 LOOP 1 COMPUTER SETPOINT RATIO—Computer
setpoint ratio for Loop 1.
CSP BIAS
–999. to 9999.
(engineering units)
LOOP 1 COMPUTER SETPOINT BIAS—Computer
setpoint bias for Loop 1.
CSP2RATO
–20.0 to 20.0 LOOP 2 COMPUTER SETPOINT RATIO—Computer
setpoint ratio for Loop 2.
CSP2BIAS
–999. to 9999
(engineering units)
LOOP 2 COMPUTER SETPOINT BIAS—Computer
setpoint bias for Loop 2.