YOKOGAWA UT55A - Page 82

6-17
IM 05P01C31-01EN
MonitoringandControlofRegularOperations
6
(Continued)
OperationDisplay Display and operation description
PIDNumber
Display
PVdisplay:Displaysmeasuredinputvalue(PV).
Setpoint display: Displays PID number currently being used.
Symbol
Target setpoint (SP) number
PID number
Loop-1 PID number is displayed when the control mode is Cascade
control and the operation mode is cascade.
Loop-2 PID number is displayed when the control mode is Cascade
control and the operation mode is AUTO or MAN.
PV1/PV2Display
The following is the Display shown when the control mode is cascade.
PVdisplayandSetpointdisplay:DisplaysLoop-1PVinputandLoop-2
PVinput.
When the control mode is Cascade control and the operation mode is
cascade (CAS lamp is lit):
Symbol of PV2
Target setpoint (SP) number
Loop-2 PV input
Loop-1 PV input
When the control mode is Cascade control and the operation mode is
AUTO or MAN:
Symbol of PV1
Loop-1 PV input
Target setpoint (SP) number
LP2 lamp is lit
(indicates the loop shown on PV display).
Loop-2 PV input
6.1MonitoringandControlofOperationDisplays