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Supplementary information
16.12 Link-up and update sequence
You can initiate the link-up and update operation for achieving the redundant system state as
follows:
● POWER ON the standby if prior to POWER OFF the CPU was not in STOP operating
state.
● Operator input on the PG/ES.
You can only start a link-up and update operation with master/standby changeover by an
operator input on the PG/ES.
Note
If a link-up and update operation is interrupted on the standby CPU (for example due to
POWER OFF, STOP), this may cause data inconsistency and lead to a memory reset
request on this CPU.
The link-up and update functions are possible again after a memory reset on the standby.
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CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA
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