Connection Status 400H system(master) and 315-2dp (slave) via profibus

Can try - but not sure it would work:^)

If you need connection status on 400H try SFC13 of SFC51 with index 0292 for example (or something similar).

If you want to know connection status on 315 - use some constantly changing bit (aka lifebit).

I mean H-system and DP-slaves. Accroding to manual SSL_ID 292 means:

Current status of the rack in the central configuration / of the stations of a DP master system.

So if you use DP_master_system_no as index input variable you'll get current status of all slaves, connected to this master - 4 DWORDs, each describing 32 slaves. Also have a look on SSL_ID 692 - because DP_slave may exist (292 says about that) - but have some errors - and here you'll need 692.

I tried it on H-system, but not behind Y-link - so i have some doubts if it would work, but you can try:^)