Displays and connectors
2.2 LEDs
CM 1243-5
14 Operating Instructions, 04/2011, C79000-G8976-C246-01
Table 2- 5 Display schemes for detailed module statuses
DIAG
(red / green)
- RUN/STOP
(yellow /
green)
ERROR
(red)
Meaning
Detailed status schemes
green
RUN without errors,
Exchange of user data with DP master
flashing green
Stopped (STOP) without errors
No project data available
flashing green
Starting up (STOP → RUN)
flashing green
Loading firmware
(The RUN/STOP and ERROR LEDs flash
alternately.)
flashing red
RUN with PROFIBUS problem:
DP slave errors
No master-slave connection
PROFIBUS cable not connected or not
detected
flashing red
System fault:
CM has not received an address from the CPU
Power supply of the CM was interrupted
CPU reset to factory defaults
Solution when the error is permanent: Station
power → OFF → ON
Other possible problems:
Module fault
Incomplete firmware version
Contact the hotline.
In STOP mode, configuring and performing diagnostics on the CM remain possible.
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