MESH for SCADA network

This is what I am trying to build.

Station A- RB111/112 with 1x SR9 + LAN + Router + DSL + internet
Station B- RB111/112 with 1x SR9 + switch
Station C- RB111/112 with 1x SR9 + switch

So far Station A and Station B see each others radio but I cannot get a connection

I tried the how to on transparent link, nothing works I cant even set them up a simple AP with client. Any hints.