Siemens SIMATIC MV500 Operating Manual page 102

Application
5.1 Program
Resetting the statistical information
Note
Program change results in reset of statistical information
Note that a program change results in a reset of the statistical information.
Use the "Reset statistics" button to reset all statistical information.
Note that this button is enabled only if the logged-on user has administrator rights (see
"Settings > Security").
Accuracy of the geometric measured values
The values "Smallest cell spacing", "X position", "Y position" and "Roll angle" can normally
be calculated with a high degree of accuracy. The calculation of the "Viewing angle" is less
accurate: Assuming that there was no distortion when the code was printed, the measuring
inaccuracy can be up to 10. This can occur particularly when the reader is almost vertical
over the surface of the code field (viewing angle 75° to 90°). Curved surfaces in general
have a negative influence on the measured viewing angle.
Since these measured values are only a side product of a successful read attempt, no
measured values are calculated or output if the read is "N_OK".
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Operating Manual, 05/2019, C79000-G8976-C495-02
SIMATIC MV500