Scaling Measured Values; Table 46: Variable Legend - Scaling Measured Values - WAGO 750-486/040-000 Manual

80 Commissioning
7.3

Scaling Measured Values

User scaling serves to adjust the process values. When user scaling is used, the
required accuracy of the process value resolution is changed, but not
fundamentally limited. User scaling is optional.
The values for "Gain" and "Offset" are required to perform user-defined scaling.
The scaling gain is the gain factor. The scaling offset is the offset on the y axis.
When these two values are input, a scaled process value is yielded as the result.
The following general scaling equation applies:
• y2 = y1 × (Gain / 1024) + Offset
The variables have the following meaning:
Table 46: Variable Legend – Scaling Measured Values
Variable
y2
y1
Gain
Offset
1024
The y1 value (unscaled process value) serves as the input value for the user
scaling. With user scaling switched off, the y1 value is transferred unchanged to
y2.
Manual
Version 1.0.0
750-486/040-000 4AI 0/4-20mA NE43 Ex i XTR
Meaning/function
Scaled process value
Unscaled process value
Scaling gain (gain factor)
Scaling offset (offset)
Resolution 1/1024
WAGO-I/O-SYSTEM 750 XTR