Connecting to non-supportet Siemens devices?

I’ve tried OPC with 2.1 and it worked. I never did get the native Siemens driver working. But I also didn’t come back to it after a long break.

I might try again soon.

I connect the Siemens ET200Pro(IM 154-8) by the S7-1500 through the OPC UA device. The rack is 0 and the slot is 0.