Global Cache Device

As I move forward with Home Remote Designer I have more and more questions
Now I’m stuck on my optoma projector.
It is connected to my network with the address but when I want to create a global cache device with this address I get an error message like:
No connection could be established because the target computer expressly refused it

Thank you for your comeback.

How is the projector linked to Global Cache? Is it IR or serial?

If it’s a serial connection you need to be using a plugin. The built-in Global Cache integration is only for relays, sensors, & IR devices. All serial devices need to use a plugin.

I hope to use it with IR

What model of Global Cache is it? Is it an iTach, Flex, etc?