Siemens SIMATIC S7-1500 Manual page 65

Interrupts, diagnostics alarms, error messages and system alarms
4.1 Status and error displays
RUN/STOP LED
LED lit yellow
LED flashes
yellow/green
LED flashes yel-
LED flashes
yellow/green
LED lit yellow
LED flashes red
64
ERROR LED
LED lit red
LED off
LED off
low
LED flashes red
LED lit yellow
X
Any LED status
MAINT LED
Service data backup in STOP ended with
error
LED off
Startup (transition from RUN → STOP)
LED off
User action prompted after "Service data
backup" during power up
LED flashes yel-
low
Startup (CPU booting)
Test of LEDs during startup, inserting a
LED flashes yel-
module.
low
LED flashing test
Lamp test at POWER ON
LED lit yellow Note: All six LEDs and the ACT-LED on
the card slot are lit yellow.
X Freeze
Any LED status This state can only be exited by switch-
ing the component off and back on
again.
Equipment Manual, 11/2019, A5E46600370-AA
Meaning
SIMATIC Drive Controller