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WAGO-I/O-SYSTEM 750
Process Image 45
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
4.3.2.3 Potentiometers
Figure 10: Process of Calculating Measured Value from Process Value – Resistance/Voltage
Measurements
This yields the following formulas for converting the local bus process value to
the measured value:
Standard format
𝐟𝐟
(
𝐱𝐱
) =
𝒙𝒙
𝟐𝟐𝟏𝟏𝟏𝟏𝟏𝟏𝟏𝟏
∗ 𝟏𝟏𝟏𝟏𝟏𝟏
%
S5-FB250 format
𝐟𝐟
(
𝐱𝐱
) =
𝒙𝒙
/
𝟖𝟖
𝟐𝟐𝟏𝟏𝟏𝟏𝟏𝟏
∗ 𝟏𝟏𝟏𝟏𝟏𝟏
%
where x = (INT16)process value and f is a float/double!