Sensor Correction Function - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

4.21

Sensor Correction Function

When there is an error between the temperature process value (PV) and actual temperature due to measurement conditions,
this function corrects the error.
Sensor Correction Operations
The process value (PV) and flag (input error) statuses are as shown in the following table depending on the relationship
between the process value before correction and the value after correction.
A B
Measuring range
lower limit
Lower limit error
judgment point
Process value Value after
before correction
correction
Area A 
Area B Areas A and B
Areas C and D
Area C Areas A and B
Areas C and D
Area D Areas A and B
Areas C, D, and E
Areas F and G
Area E Areas D and E
Areas F and G
Area F Areas D and E
Areas F and G

Area G
Setting method
Set the span correction as described below.
[Navigation window]  [Parameter]  Target module  [Module Parameter]  [Application Setting]  [Sensor
correction value setting]
The span types are as described below.
Input type
During internal temperature inputs
During internal micro voltage inputs
During external inputs
Precautions
The value including below the decimal point is handled. Set the actual value using the value multiplied by 100.
4 FUNCTION
48
4.21 Sensor Correction Function
C D
Lower limit value of
Upper limit value of
the input range
the input range
Input range
Temperature
process value (PV)
Display lower limit value
Display lower limit value
Value after correction
Display lower limit value
Value after correction
Display lower limit value
Value after correction
Display upper limit value
Value after correction
Display upper limit value
Value after correction
Display upper limit value
Display upper limit value
E F G
Measuring range
upper limit
Upper limit error
judgment point
Flag (input error) status
Input error (lower limit) status is
ON
Input error (lower limit) status is
ON
OFF
OFF
OFF
Input error (upper limit) status
is ON
Input error (upper limit) status
is ON
Span
Input range span
Scaling span
External inputs span
Remarks
If the process value before correction is in area A,
correction processing is not implemented
Values after correction are not input to areas E, F,
or G
Values after correction are not input to areas E, F,
or G

Values after correction are not input to areas A, B,
or C
Values after correction are not input to areas A, B,
or C
If the process value before correction is in area G,
correction processing is not implemented