epics-modules / motor

APS BCDA synApps module: motor
https://epics-modules.github.io/motor/
20 stars 48 forks source link

Problems redefining DVAL when UEIP=Yes #217

Open kmpeters opened 5 months ago

kmpeters commented 5 months ago

If a motor has the following setup:

And the DVAL is redefined, the DVAL will be calculated based on the MRES, instead of the ERES, resulting in the wrong position being sent to the controller.

This problem was encountered during testing of an OMS MXA prototype with a BiSS-C encoder. I don't think this problem is driver-specific, but I could be mistaken.