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IMR01N12-E7
10. ERROR DISPLAY
10.1 Over-scale and Underscale
The table below shows displays, description, control actions and solutions when the Measured value
(PV) exceeds the display range.
Display Description
Action
(Output)
Solution
Measured
value (PV)
[Flashing]
Input error
Measured value (PV)
exceeds the input error
determination point (high
/low limit).
Action at input error:
Output depending on the
action at input error (high
/low limit)
Event output:
Output depending on the
Event action at input error
Check input type, input
range, sensor and sensor
connection.
[Flashing]
Over-scale
Measured value (PV) is
above the display range
limit high (or 99999).
[Flashing]
Underscale
Measured value (PV) is
below the display range
limit low (or
19999).
Prior to replacing the sensor, always turn OFF the power or change to STOP with
RUN/STOP transfer. As for care which should be taken when replacing the pressure
sensor, refer to the instruction manual for “Pressure sensor used.”
Input error determination point
(high)
Manipulated output at
input error
Select one of
these
Manipulated output value (MV)
obtained by PID control
Input range
(Input span)
Display range limit
Differential gap
(0.1 % of input span)
Action area at input error
Measured
value (PV)
flashing
Event status at input error
Manipulated output
(MV)
Event
Input error determination point
(low)
Measured
value (PV)
flashing
Over-scale
Underscale
Present output
5 % of input span
Measured value
(PV) display
Select one of
these
Manipulated output at
input error
Event status at input error
Action area at input error
Present output
Setting range of the input
error determination point
