Which products are affected?
ESP-SP-POS - Software Package Positioner V3.1
What happens?
During the internal calculation of corrected target position, incorrect interpolation results are obtained with very large corrections. As a result the target position determined is incorrect.
When does the problem occur?
To determine a corrected position, interpolation is used between two entries in the measurements table. During the interpolation, it is theoretically possible for a multiplication to result in a numerical overflow of the internal double integer values. This will result in an incorrect interpolation result. This problem only occurs if the interpolated points in the measurements table are a long way apart.
Possible diagnostics?
The function provides incorrect interpolation results. This behaviour has been theoretically determined during the system test.
Short-term measures/recommendations?
None.
Evaluation:
When this function is used correctly, the numerical distances between the interpolation points are not sufficiently large that an internal numerical overflow can occur.
