Siemens Simatic ET 200SP Manual page 18

Meaning of the LED displays
The following tables contain the meaning of the status and error displays. Remedies for
diagnostics alarms can be found in section Diagnostics alarms (Page 19).
Table 5- 1
Table 5- 2
Channel status
Table 5- 3
Analog output module AQ 2xU/I HF (6ES7135-6HB00-0CA1)
Manual, 02/2014, A5E33062529-AA
Error display of the DIAG LED
DIAG LED 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 Channel status/channel error LED
Channel error
Off Off
On Off
Off On
On On
Status display of the PWR LED
PWR LED Meaning
Supply voltage L+ missing
Off
Supply voltage L+ present
On
Meaning
Channel deactivated or load voltage L+ missing
Channel activated and no channel diagnostics
Channel activated and channel diagnostics
Not permitted (error)
Interrupts/diagnostics alarms
5.3 Diagnostics alarms
17