Panasonic FP-X0 L40MR - Page 29

Conversion program using Scaling instruction (F282)
- Appropriately interpolated data can be obtained from nonlinear data by creating the data table of digital
values after conversion and temperature and executing the scaling instruction (F282).
DT90044
DT0
DT100
: Special data register
(Digital value after thermister input
conversion)
: Beginning of data table
: Data after conversion (Temperature)
Example of data table
Input data (Digital value
after conversion)
Output data
(Temperature)
DT0
11
DT1 332 DT12 50
DT2
409
DT13
60
DT3 487 DT14 70
:
:
:
:
: : : :
DT11
878
DT22
150
Note) In DT0, specify the value of paired data.
2.4.5 Voltage input
Connect the output line of a device to the analog input connector externally to perform voltage input.
Circuit diagram
- Do not connect anything with the 1/2 pin.
Voltage input value and digital conversion value
- Use the following formula to convert the voltage input value and digital conversion value.
(Digital conversion value + 1)
Voltage input value (V) = ―――――――――――――― x 10
1012
[Example] When digital conversion value is K900;
(K900 + 1)
Voltage input value (V)= ――――――― x 10 = 8.80V
1012
Input impedance
Approx. 1MΩ
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