Hello Dan,
Thank you for your prompt response. I read all plugin related posts here as well as on the CNC zone and saw that one user had a similar problem, but I did not see how it was solved.
I use the default screen and before I installed the plugin I did not modify any Textfield labelnumbers and screen. I also did not use the Amp Field.
I managed to solve the problem by uninstalling the plugin version12 and installing version 10. This version works for me, UCCNC does not report an error and I can turn on and off the spindle as well as to change the speed.
Only if I add the Amp field the error reappears. I added the Amp field by copying the Sact field in the screen editor and changing its labelnumber in 20668 and putting the same number in the HYPLUGIN configure setup field. As I did this, UCCNC reported an error (UCCNC has encountered a problem and needs to close) again.
I wipe off the field for Amp and UCCNC and the plugin started to work properly. I changed the number of Sact fields from 870 to 20665 and entered the same number in the plugin configuration. Now, in UCCNC, I can see values for the Sact fields (20665) and the S overridden field (2451).
I tested this configuration for a couple of hours and UCCNC no longer reported errors.
I will send you PM my email address if you have some suggestions regarding the plugin version. Thanks for the support