WAGO I/O System 750 XTR
Process Image 69
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
5.6
Examples of the Calculation of the Measured Values
from the Process Values
The format of signed measured values (Int32) is the two’s complement.
In general, the following formula applies to the calculation of the measured
values from the process values:
Measured value = process value × PI scaling factor
The PI scaling factor is defined for each measured value in the section
“Measured Value Collections.” Examples of the calculation follow:
Calculation of the Measured Values for Voltage
Process value
0x00119E8C (1,154,700)
PI Scaling Factor
0.01 V
Formula
Measured value = process value × PI scaling
factor
Measured value for
voltage
11,547 V
Calculation of the Measured Values for Frequency
Process value
0x0000C3B8 (50,104)
PI Scaling Factor
0.001 Hz
Formula
Measured value = process value × PI scaling
factor
Measured value for
frequency
50.10 Hz
Calculation of the Measured Values for Phase Angle
Process value
0x000004E3 (1,251)
PI Scaling Factor
0.01 degrees
Formula
Measured value = process value × PI scaling
factor
Measured value for
phase angle
12.51 degrees
Calculation of the Measured Values for cos phi
Process value
0xFFFFFFB2 (−78)
PI Scaling Factor
0.01
Formula
Measured value = process value × PI scaling
factor
Measured value for cos
phi
−0.78