Siemens SIMATIC S7-1500R/H Manual page 33

Interrupts, diagnostics, error messages and system events
4.1 Status and error display of the CPU
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
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 for three seconds. The MAINT LED lights up until the RUN-
Redundant system status is reached again.
32
ERROR LED
LED off
LED flashes red LED flashes yellow
LED off
LED off
LED flashes red LED flashes yellow
LED off
LED flashes yellow
LED off
LED off
LED off
LED off
LED flashes red
LED flashes red
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.
LED lit yellow
Completion of system initialization
CPU executes internal activities in an operating
state ≠ RUN-Redundant.
LED lit yellow
CPU defective
Firmware update successfully completed.
The primary CPU is in STARTUP operating state.
LED lit yellow The backup CPU is in SYNCUP operating state.
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.
LED lit yellow You need to check/replace the affected hardware
within a short period of time.
The primary CPU is in RUN-Syncup operating
state.
Active Force job
PROFIenergy pause
The primary CPU is in RUN operating state.
The CPU is in RUN-Redundant operating state.
LED off There are no events, requirements, errors, etc.
A diagnostic event is pending in RUN-Redundant
operating state.
LED off
A diagnostic event (e.g. failure of an IO device
within the PROFINET ring or no access to
LED lit yellow
SIMATIC memory card possible
nance is demanded (e.g. interruption of the
PROFINET ring).
Meaning
) and mainte-
1)
CPU 1517H-3 PN (6ES7517-3HP00-0AB0)
Equipment Manual, 11/2019, A5E42011886-AB