Siemens SIMATIC S7-300 Equipment Manual page 30

LEDs
LEDs for displaying the operating mode
The different combinations of the LEDs on the front panel indicate the status:
Table 4- 1 LEDs: SF, BF, RUN, STOP
SF(red) BF (red)
-
-
* Does not apply to loading via the update center in Web diagnostics.
)
30
RUN (green)
-
-
STOP (yellow) CP operating mode
• Starting up after power "ON"
or
• Stopped (STOP) with errors
In this state, the CPU or intelligent modules in the
rack remain accessible using PG functions.
Starting up (STOP → RUN)
Running (RUN)
Stopping (RUN → STOP)
Stopped (STOP)
In STOP mode, configuring and performing
diagnostics on the CP remain possible.
- Duplicate IP address detected
- The CP is configured as a PROFINET IO device; there is
no data exchange with the PROFINET IO controller.
Running (RUN) with error. Possible causes:
• Event display in conjunction with the MRP
function. The CP diagnostics buffer provides
detailed information.
or
• Extended port diagnostics reports an error.
Examples:
–
Current port setting (transmission medium,
duplex) does not correspond to the
configuration.
–
Port interconnection does not correspond to
the configuration.
Loading using the Firmware Loader is active. *
Firmware activation after loading using the Firmware
Loader is active. *
Firmware was successfully downloaded. *
Firmware download aborted. *
Module fault / system error
Equipment Manual, 01/2023, C79000−G8976−C198−09
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CP 343-1 Lean
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