Wago file description

those are not bus couplers which is why there are no device descriptions files for them.

Wago bus couplers scan own backplane for connected IO modules so you just need to communicate with the bus coupler. check DeviceNet discussions and you will find 750-306 etc. you can keep all IO and just replace 750-306 with some different bus coupler and the same IO will be usable on a different fieldbus (ProfiNet or whatever).

i don't think you can do that ...

while those may mechanically fit together, all products inside one "PLC" need to be compatible... mechanically and electrically. so stick with products from the same company and the same product family.

Those products are different generations:

Beckhoff devices use e-Bus (newer + faster), while listed Wago products still use old K-bus. even the bus end module is different, on eBus it is just piece of plastic and you can run without it. but on kBus it has jumpers that terminate bus. without those jumpers kBus is dead.

chances are you already have Beckhoff products and want to add some discrete IOs to same bus coupler (EK1100). that is fine, but use Beckhoff IOs like EL1809 and EL2809.

Go back over READ FIRST...

Problem is your lack of communication skills. To get help from others, they need to understand you, so try describing the issue in necessary detail. Not just what you expect but also how to replicate the issue.

So far you told us nothing...

What file you are talking about? Did you look inside it? Can we see it too? What exact steps you use?

Link or URL is a string. Why paste it as an image? Is it in a QR code form?