Regarding this older thread: viewtopic.php?t=6756
I have the same problem, disconnecting either network is fine, but when reconnecting a slave loses connection.
This happens regardless of the selection 'AutoRestart Slaves'. In my opinion, in a redundant network this setting should not matter, since ideally you shouldn't need to restart any slaves.
Is it possible to have a redundancy on a different network adapter? For example on a beckhoff CX5120 the main network would be on a CmpCX5000 and the secondary on a Cmp CmpEt1000Drv.
Have a nice weekend, Omar