Siemens SIMATIC ET 200SP Manual page 30

Meaning of the LEDs
The tables below explain the meaning of the status and error displays. Corrective measures
for diagnostics alarms can be found in section Diagnostics alarms (Page 32).
DIAG LED
Table 5- 1
DIAG LED
LED channel status/channel error
Table 5- 2
LED channel
PWR LED
Table 5- 3
Digital input module DI 8x24VDC HF (6ES7131-6BF00-0CA0)
Manual, 12/2017, A5E03576305-AE
Error display of the DIAG LED
Meaning
Backplane bus supply of the ET 200SP not OK
Off
Module not ready for operation (no parameters assigned)
Flashes
Module parameters assigned and no module/channel diagnostics
On
Module parameters assigned and module/channel diagnostics
Flashes
Status / error display of the LED channel status / channel error
LED channel
status error
Off Off
On Off
Off On
On On
Status display of the PWR LED
PWR LED Meaning
Missing supply voltage L+
Off
Supply voltage L+ present
On
Meaning
Channel deactivated or process signal = 0
No supply voltage present or
•
Process voltage > 11 V is present regardless of whether or
•
not the channel is activated and regardless of whether diag-
nostics was detected
Supply voltage is available and process voltage < 11V is pre-
sent regardless of whether or not the channel is activated and
regardless of whether diagnostics was detected
Channel activated and diagnostics enable was recognized
Interrupts/diagnostics alarms
5.1 Status and error displays
29