Siemens CP 343-1 Lean Manual page 26

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.
)
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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
)
)
Manual, 10/2012, C79000−G8976−C198−07
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CP 343-1 Lean