Redundancy switch-over in case of an L-bus failure
- Check the status of the stations
The status of the stations should always be checked after each CL redundancy switch-over (message on the alarm page!) via UEBERSICHT, AUSF. UEB.
If the status of a quiescent redundancy station is 'blocked', a redundancy update must be carried out.
If the L-bus of Contronic E to an active PBM 90 fails, the related CL coupler is set to 'defective' and, if possible, a redundancy switch-over takes place. An automatic reset of the 'defective' status when bus traffic is resumed, is currently not implemented, i. e. the station remains blocked for redundancy take-overs.