Order of RESET in an MM nest
A description of this resolution:
- Respecting the specific order of RESET acknowledgement
During start-up of station, update, upgrade, on-line update, CPU replacement or after the INIT test, the RESET key of the operator station has to be struck last on principle at the time when the operator station is still in initialized state (*).
This means that the MM-CPU’s must have been acknowledged before.
'Order of RESET in an MM nest' resolves the following:
- Mass memory
During start-up of station, update, upgrade, on-line update, CPU replacement or after the INIT test a specific order of RESET acknowledgement has to be respected.
If this specific order or handling is not respected the operator station will in the long run not recognize the MM processor, i. e. response by the watchdog may be the result or the stopping of the respective MM.
Applies to all versions having an 80 MB disk.
The underlying cause is:
- Order of RESET acknowledgement
When respecting the specific order the operator station in state (*) recognizes whether RAM and/or MM couplers exist.