Hi,
I think you reference is the following post / conversation, right?
If yes, as mentioned before a X20IF1091 cannot be used together with a fieldbus coupler.
I also can remember that you can’t change the existing setup of the 2 X20 blocks for testing reasons, am I right?
If yes, your architecture you have to replace the X20IF1091 with a X20BT9x00 (X20BT9400 or X20BT9100, I would prefer a X20BT9400). But to couple the 2nd block you also have to add at the end of the 1st block a X20BT9x00, because X2X bus is a serial line bus.
If this “don’t change the blocks policy” also includes not to add a X20BT9x00 at the end of the first block, then there’s no other possibility then using a 2nd X20BC00E3 as master for the 2nd block (of course, from the Siemens PLC side the profinet master can access more then one slave ).
I try to visualize here what I mean.
1.) both X20 blocks unchanged, but then need of 2 profinet buscouplers
2.) one X20 block changes, only 1 profinet buscoupler needed
From the software side, you need the Siemens programming environment, and from B&R side only the configuration files to import / add the slave devices to the master (I see that Oliver already answered in parallel in his post below, thanks!).
Hope that helps a bit, best regards!