How can I write on modbus WAGO digital outputs

Other people use WAGO 750-881 with openHAB, so stick with it.

One thing I do notice from previous threads, is that the WAGO usually expects read and write to different addresses. I don’t know why or have any idea about how to set the WAGO up.
Example -

What would be most useful here is - what does that other system send and to where?