Siemens SIMATIC ET200SP Equipment Manual page 27

Interrupts, error messages, diagnostics and system alarms
4.1 Status and error display of the CPU
Meaning of the POWER, RUN/STOP, ERROR and MAINT LEDs
CPU 1510SP-1 PN features an LED for monitoring the supply voltage of the electronics (PWR)
and three LEDs for displaying the current operating and diagnostics status. The following
table shows the meaning of the various combinations of colors for the POWER, RUN/STOP,
ERROR and MAINT LEDs.
Table 4- 1 Meaning of the LEDs
POWER RUN/STOP LED
LED
LED off
LED lit green
LED lit green LED lit green
LED lit green LED lit green
LED lit green LED lit green
LED lit green LED lit green
LED lit green LED lit yellow
LED lit green LED lit yellow
LED lit green LED lit yellow
LED lit green LED lit yellow
LED lit green
LED flashes yellow
LED lit green
LED flashes
yellow/green
26
ERROR
LED
LED off LED off
LED off
LED flashes red
LED off
LED flashes red
LED off
LED off
LED flashes red
LED off
LED off
LED flashes red
LED off
LED off
MAINT
LED
Missing or insufficient power supply on
the CPU.
LED off
An error has occurred.
LED off
CPU is in RUN mode.
LED off
A diagnostics event is pending.
LED off
Maintenance demanded for the plant.
The affected hardware must be
LED lit yellow
checked/replaced within a short period of
time.
Active Force job
Bad configuration
LED flashes yellow
A diagnostics event is pending.
LED off
Firmware update successfully completed.
LED flashes yellow
CPU is in STOP mode.
LED off
The program on the SIMATIC memory
card is causing an error.
LED flashes yellow
Firmware update using SIMATIC memory
card has failed.
The CPU has detected an error state.
Additional information is available via the
CPU diagnostic buffer.
CPU is performing internal activities dur-
ing STOP, e.g. startup after STOP.
LED off
Download of the user program from the
SIMATIC memory card
CPU carries out a program with active
breakpoint.
Startup (transition from STOP → RUN)
LED off
Startup (CPU booting)
Equipment Manual, 05/2021, A5E03506268-AD
Meaning
CPU 1510SP-1 PN (6ES7510-1DJ01-0AB0)