Commissioning
9.4 Operating and system states
S7-1500R/H redundant system
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System Manual, 10/2018, A5E41814787-AA
③
Finishing tasks
The instructions running asynchronously on the primary CPU are terminated and new ones
are accepted but not started.
From this point on, restarted asynchronous instructions are delayed until the "Copying the
working memory" phase. The "BUSY" output parameter of instructions is"1". However,
processing does not yet start.
The communication connections in the primary CPU are temporarily ended. You can no
longer delete, load, generate or compress blocks in the user program. You can no longer run
any test or commissioning functions.
Table 9- 7
Preparing the copying of the work memory
Primary CPU
Backup CPU
Summary of Contents for Simatic S7-1500H
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