Siemens SIMATIC ET 200SP System Manual page 212

The table below shows the effects of the operating mode transitions:
Table 11- 7 Operating mode transitions
No. Operating mode transitions
①
POWER ON →
STARTUP
②
POWER ON →
STOP
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
After switching on, the CPU switches to
"STARTUP" mode if:
The hardware configuration and
•
program blocks are consistent.
Startup type "Warm restart - RUN" is
•
set.
Or
Startup type "Warm restart - mode
•
before POWER OFF" is set and the
CPU was in RUN mode before
POWER OFF.
After switching on, the CPU goes to
"STOP" mode if:
The hardware configuration and
•
program blocks are inconsistent.
Or
The "No restart" startup type is set.
•
Or
Startup type "Warm restart - mode
•
before POWER OFF" is set and the
CPU was in STOP mode before
POWER OFF.
11.6 Operating modes of the CPU
Effects
The CPU clears the non-retentive memory, and re-
sets the content of non-retentive DBs to the start
values of the load memory. Retentive memory and
retentive DB contents are retained.
The 500 newest entries in the diagnostics buffer are
retained.
The CPU clears the non-retentive memory, and re-
sets the content of non-retentive DBs to the start
values of the load memory. Retentive memory and
retentive DB contents are retained.
The 500 newest entries in the diagnostics buffer are
retained.
Commissioning
211