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Siemens Simatic ET 200SP Manual Page 21

Analog input module ai 2xu st.
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Meaning of the LEDs
The following tables show the meaning of the status and error displays. Corrective measures
for diagnostics alarms can be found in section Diagnostics alarms (Page 22).
DIAG LED
Table 5- 1
DIAG LED
Channel status LED
Table 5- 2
Channel status
PWR LED
Table 5- 3
Analog input module AI 2xU ST (6ES7134-6FB00-0BA1)
Manual, 12/2015, A5E36104728-AA
Error display of the 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 the channel status LED
Meaning
LED
Channel disabled
Off

Channel activated
On
Status display of the PWR LED
PWR LED
Meaning
Missing supply voltage L+
Off
Supply voltage L+ present
On
Interrupts/diagnostics alarms
5.1 Status and error display
21

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