Time synchronization telegrams
Pull the fuses for all CMXs of the island and put into operation again starting with the first redundancy pair with the lowest subscriber number.
Then reset this pair by pulling and inserting the fuses again. Following this the island must be checked for one CMX pair with coupling function A-L-bus. Otherwise repeat the procedure.
Faulty routing of the time synchronization telegrams results after the linking of a redundant CMX unit.
- The corresponding RUPIs do not receive time synchronization telegrams
If a bus configuration consists only of non-redundant units, and if a redundant CMX40 is retrofitted, then the KO bit is set for the redundant CMX40 pair with the lowest user number.
The active unit now carries out the coupling function between the A and L-bus. This is not reported to the corresponding RUPIs, which therefore do not receive time synchronization telegrams.