Siemens SIMATIC ET 200SP Manual page 22

Interrupts/diagnostics alarms
5.1 Status and error display
Meaning of the LED displays
The following tables show the meaning of the status and error displays. Measures for dealing
with diagnostics alarms can be found in the section Diagnostics alarms (Page 24).
DIAG LED
Table 5- 1
DIAG LED
Channel status LED
Table 5- 2
Channel status
PWR LED
Table 5- 3
PWR LED
22
DIAG LED fault/error display
Meaning
Backplane bus supply of the ET 200SP not OK
off
Module parameters not assigned
Flashes
Module parameters assigned and no module diagnostics
on
Module parameters assigned and module diagnostics
Flashes
Status display of the channel status LED
Meaning
LED
Channel disabled
off
Channel enabled
on
Status display of the PWR LED
Meaning
No supply voltage L+
off
Supply voltage L+ present
on
Analog Output Module AQ 4xU/I ST (6ES7135-6HD00-0BA1)
Manual, 03/2016, A5E03573365-AD