Dear experts,

I have a line with a CPU 412-2 DP. On the DP master system i have some slaves. Sometimes some of the slaves are lost - DP diagnostic says: DP slave not accessible by the means of the bus. I get the slave back only when i stop CPU and then start again. I did try to reactivate slave with SFC12, but with no luck. Restarting CPU wouldn't be a problem, but whole line stops. Maybe there is another way to reactivate DP slave without stopping CPU?

hi @rturas,

I would rather check why the slaves are losing connection to the master.

Check the proper wiring, shielding and grounding of the nodes.

hope this helps,

regards,

heymopS04

The problem is that i cannot find the problem so far. I did check all cabeling, shielding, no visual problems. I also have BT200, made all scans but also couldn't find any problems. BT200 says that everything is ok.