r/Siemens

Hi guys, I have followed this video of Hegamurl https://www.youtube.com/watch?v=cUN7lic-1hE&list=PLtGimRyb0S0ivKG6RsDWTtPSyOZ_iqS3b&index=16 of configuring an HMI interface. The problem is that I am not capable of starting the simulation neither going online in order to have HMI simulation in screen.

The configuration is the flollowing:

https://preview.redd.it/y4hwtpg9zebh1.png?width=1697&format=png&auto=webp&s=96f76e35e49acd4a874d86816467c5acc7458a93

Errors that appear when I try to go online with the HMI:
Going online: the HW configuration of the HMI_RT_1 was changed but it was not compiled and loaded yet. The shown diagnostics is possibly inconsistent or wrong.,7/5/2026,3:33:21 PM
The target HMI_RT_1 in the offline project is different from the target in the online project (address FF-FF-C0-A8-00-01).,7/5/2026,3:33:23 PM

https://preview.redd.it/ontmly1jzebh1.png?width=1377&format=png&auto=webp&s=2acf4ad1de320a95ac0396d340a3483d9bf734dd

Error at the moment of downloading to device:

https://preview.redd.it/40bmtvrqzebh1.png?width=796&format=png&auto=webp&s=30981ee0abbedc144f65ffd080d0b647d5cf5a0f

Thank you for your help and ask me if you need me to show anything else to solve the problem :)

I’m curious what Siemens NX problems have wasted the most time for people.
What was the last modelling, sketch, feature-tree, assembly, or meshing issue that made you question your life choices for 1–2+ hours?

Stuff like:
- vague error messages
- features randomly failing
- broken references
sketches refusing to behave
extrudes doing weird things
assembly constraints fighting back
debugging the completely wrong thing
What was the problem, and how did you eventually fix it?

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