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Explains how the QoR (Quality of Run) works, which is available via IO-Link.
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Table of Contents
Many SICK sensors have a quality score that indicates the operational reliability of the sensor
there are 2 parameters for this, which are available via IO-Link:
1. QoT = Quality of Teach
The QoT shows the teach-in quality of a mark, based on the signal contrast of the print mark against the background.
Note: Only with a verry low signal on the marks, the quality of teach drop below 100%.
2. QoR = Quality of Run
The Quality of Run (QoR) is corresponding to the Quality of Teach (QoT). QoR value is ≤ QoR.
Example: - If QoT is 100 % the QoR can be 100 % max. - It QoT is 47 % the QoR can be 47 % max.
The QoT value compares the signal of each detected mark in operation with the mark signal during the teach-in. If the signals of the marks become weaker, e.g. because the optical front becomes dirty, the QoR value decreases step by step.
Note: The QoR can be used as an indicator of maintenance. Individual bad marks do not yet have an impact on QoR. Only in the event of systematic deterioration during ongoing operations.
The same applies in the other direction:
Only after a few good marks the value rise again.
Note: The upper quality value is capped at 100%
Conclusion
The QoT only falls below 100% with weak contrasts during teach-in.
