Scaling Process Values; Table 33: Variable Legend - Scaling Process Values - WAGO I/O-SYSTEM 750 Manual

59 Commissioning
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7.3

Scaling Process Values

User scaling allows you to scale the process value application specific with the
following voltage ranges by means of parameterizing the Gain and Offset values:
Signal type "+/- 10 V": −11 V ... +11 V
• Signal type „0-10 V": 0 V ... +11 V
•
User scaling is optional.
The values for "Gain" and "Offset" are required to perform user 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:
• y = (x + Offset) × (Gain / 1024)
The variables have the following meaning:
Table 33: Variable Legend – Scaling Process Values
Variable
x
y
Gain
Offset
1024
The x value (unscaled process value) serves as the input value for the user scaling.
With user scaling switched off, the x value is transferred unchanged to y.
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Manual
Version 1.0.0
Meaning/function
Unscaled process value
Scaled process value
Scaling gain (gain factor)
Scaling offset (offset)
Resolution 1/1024
WAGO-I/O-SYSTEM 750
750-597 8AO 0-10V/±10V DC