Siemens Simatic S7-1500 / ET 200MP - Page 271

Commissioning
12.5 Operating modes
Automation system
270 System Manual, 01/2023, A5E03461182-AK
No.
Operating mode transitions
Effects
⑤
STARTUP → RUN
In the following cases, the CPU goes from "STARTUP" to
"RUN" mode when:
• The CPU has initialized the PLC tags.
• The CPU has executed the startup blocks successful-
ly.
⑥ RUN → STOP In the following cases, the CPU goes from "RUN" mode
back to "STOP" mode:
• The CPU detects an error that prevents it from con-
tinuing to operate.
• You have inserted CMs/CPs that have not yet been
configured.
• The CPU processes a STOP command in the user
program.
• You set the CPU to "STOP" via the programming
device, display or mode selector switch / operating
mode button.
1)
1)
Standard, F-CPUs / compact CPUs from article number 6ES751x-xxx02-0AB0/6ES751x-1CK01-0AB0: You switch the
mode using keys (RUN and STOP).
Note
RUN
→ STOP in configurations with centrally inserted communication modules (CM)
and/or communications proces
sors (CPs)
Centrally inserted communications modules (CMs) and/or communications processors (CPs)
that have not yet been configured and downloaded to the CPU can cause a transition from
"RUN" mode back to "STOP" mode.
Remove unconfigured CMs/CPs or configu
re and download the configuration of these CMs to
the CPU before you set the CPU to "RUN" mode.