Siemens SIMATIC S7-1500 System Manual page 116

No. Operating mode
③
④
⑤
⑥
S7-1500 Automation System
System Manual, 02/2014, A5E03461182-AB
Conditions
transitions
STOP → STARTUP The CPU switches to "STARTUP" mode if:
•
•
•
Non-retentive memory is cleared, and the content of non-retentive DBs
is reset to the start values of the load memory. Retentive memory and
retentive DB contents are retained.
STARTUP → STOP The CPU returns to the "STOP" mode in the following cases of
"STARTUP":
•
•
•
STARTUP → RUN The CPU goes to the "RUN" mode in the following cases of "START-
UP":
•
•
RUN → STOP The CPU returns to the "STOP" mode in the following cases of "RUN":
•
•
•
The hardware configuration and program blocks are consistent.
The CPU is set to "RUN" by the programming device or via the
display and the operating mode switch is in the RUN position
or
the operating mode switch is switched from STOP to RUN.
An error is detected during start-up.
The CPU is set to "STOP" mode via the programming device, the
display or the operating mode switch.
A STOP command is executed in the Startup OB.
The CPU has initialized the PLC tags.
The CPU has executed the startup blocks successfully.
An error is detected that prevents continued processing.
A STOP command is executed in the user program.
The CPU is set to "STOP" mode via the programming device, the
display or the operating mode switch.
Commissioning
9.4 Operating modes
115