Siemens SIMATIC S7-1500R/H Manual page 30

The following table shows the meaning of the various color combinations for the RUN/STOP,
ERROR and MAINT LEDs.
Table 4- 1 Meaning of the LEDs
RUN/STOP LED
LED off
LED flashes
yellow/green
LED lit yellow
LED flashes yellow
LED lit yellow
LED lit yellow
LED flashes
yellow/green
LED flashes
yellow/green
LED flashes yellow
LED lit green
LED lit green
LED lit green
LED lit green
If access to the SIMATIC memory card is not possible in RUN-Redundant (wrong card, card full/write protected), the
1)
system switches to RUN-Solo. The ERROR LED flashes three times. The MAINT LED lights up until the RUN-
Redundant system status is reached again.
CPU 1515R-2 PN (6ES7515-2RM00-0AB0)
Manual, 10/2018, A5E42009914-AA
ERROR LED
LED off
LED flashes red LED flashes yellow
LED off LED lit yellow
LED off LED lit yellow
LED flashes red LED flashes yellow
LED off
LED flashes yellow
LED off LED lit yellow
LED lit yellow
LED flashes red
LED off
LED off LED lit yellow
LED off
LED flashes red
LED lit yellow
LED flashes red
Interrupts, diagnostics, error messages and system events
MAINT LED
Missing or insufficient supply voltage on the CPU.
LED off
Startup (CPU booting)
Test of LEDs during startup, inserting a module.
LED flashing test
CPU is in operating state STOP.
Completion of system initialization
CPU executes internal activities in an operating
state ≠ RUN-Redundant.
CPU defective
Firmware update successfully completed.
The primary CPU is in operating state STARTUP.
The backup CPU is in operating state SYNCUP.
The backup CPU has not yet been restarted for
SYNCUP during this phase.
The CPU performs a warm restart.
LED off
Maintenance demanded for the plant.
You need to check/replace the affected hardware
within a short period of time.
The primary CPU is in operating state RUN-
Syncup.
Active Force job
PROFIenergy pause
The primary CPU is in operating state RUN.
The CPU is in operating state RUN-Redundant.
LED off There are no events, requirements, errors, etc.
A diagnostic event is pending in operating state
RUN-Redundant.
LED off
A diagnostic event (e.g. failure of an IO device
within the PROFINET ring or no access to
SIMATIC memory card possible
nance is demanded (e.g. interruption of the
PROFINET ring).
4.1 Status and error display of the CPU
Meaning
1)
) and mainte-
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