Siemens CP 342-5 - Page 30

LEDs and mode selector
2.1 LED displays
CP 342-5 / CP 342-5 FO
30 Manual, 07/2017, C79000-G8976-C146-10
SF(red)
BUSF (red)
RUN (green)
STOP (yellow)
CP operating mode
Stopping (RUN → STOP)
The time required for the signaled
mode change depends on the size
of the STEP 7 project; this can take
up to 1 minute in large projects.
On completion of the mode change,
the data exchange with the DP
slaves continues.
Stopped (STOP)
In STOP mode, configuring and
performing diagnostics on the CP
remain possible.
Stopped (STOP) with error(s).
In this state, the CPU or intelligent
modules in the rack remain acces-
sible using PG functions.
Running (RUN) with problems on
PROFIBUS.
Running (RUN) with problems on
the DP slaves.
Updating firmware
• Ready to begin loading firm-
ware. (Operating mode active
for a period of 10 s)
or
• CP is in DP slave mode and is
not involved in cyclic data ex-
change with the DP master.
Loading firmware.
Invalid firmware was loaded.
Cp waits for firmware update. (CP
has incomplete firmware)
Errors
Module fault / system error
(The two unlabeled LEDs also flash
in this status.)