Meaning Of Leds; Description Of The Led Statuses; Behavior Of The Leds During Booting - Siemens SINAMICS S120 Manual

Control Units and operating elements
4.3 Control Unit CU320-2 PN (PROFINET)
4.3.4

Meaning of LEDs

4.3.4.1

Description of the LED statuses

The different states during power-up and in operation are indicated by the LEDs on the Control
Unit.
• The duration of the individual statuses varies.
• If an error occurs, the booting procedure is terminated and the cause is indicated accordingly
via the LEDs.
• Once the unit has successfully booted up, all the LEDs are switched off briefly.
• Once the unit has booted up, the LEDs are controlled via the loaded software.
4.3.4.2

Behavior of the LEDs during booting

Table 4-12
Red flash‐
ing light
Red flash‐
ing light
Red flash‐
ing light
0.5 Hz
Table 4-13
Orange
62
Load software
LED
RDY COM
Red Orange Orange
Red Red
Red
2 Hz
Red flash‐
ing light
2 Hz 2 Hz
Red Orange
flashing
light
Red Off
Off Red
Red flash‐
ing light
0.5 Hz
Firmware
LED
RDY COM
Off
Alternating
Status
OPT
Reset
Off BIOS loaded
Off BIOS error
Off File error
Off FW loading
Off FW loaded
Off FW checked
(no CRC error)
Off FW checked
(CRC error)
Status
OPT
Off Initializing
Running
Comment
Hardware reset
RDY LED lights up red, all other LEDs light up
orange
–
• Error occurred while loading the BIOS
• Memory card not inserted or defective
• Software on memory card not present
or corrupted
RDY LED lights up red, COM LED flashes or‐
ange without fixed frequency
–
–
• CRC invalid
Comment
–
See the table below
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2