UR+Robotiq Screwdrivering solution

[cg1]

Answer a very similar question the other day.

Unknown Function: findmodel

Yeah that properly why then. one of the things a URCap does is basically to define a bunch of functions in the top of any script file created through the teach pendant to give you new functionality. while I have never used Robotiq I bet you will find the findmodel function you are looking here. But this also means that you cant just use external programs like what you are doing now, and as the guy in the post did. As these functions simply is not defined in the script file you create on you …

And your problem looks exactly the same.

By the way I do think you should switch to the primary interface instead of the secondary one
https://www.universal-robots.com/articles/ur/interface-communication/overview-of-client-interfaces/

Kind Regards