Hello,

we have PCS7- 410E CPU with 3 OI rack linked via profibus DP, the first io rack is standard with ET200M 153-2 IM the second one is Sail Safe with ET200M 153-2 IM as well and the third one is a remote IO Fail safe connected through ET 200 SP with profibus DP over Fiber optics using Profibus OLMs on each side, the system is experiencing an intermittent communication problem and Distributed I/Os: station Failure is displayed in the CPU diagnostic buffer.

MT

Hello, every one the Issue resolved after changing the profibus cables and the connectorsby a new ones.