Siemens SIMATIC ET 200SP Manual page 44

Interrupts/diagnostic messages
6.1 Status and error display
PWR LED
Table 6- 1
DIAG LED
Table 6- 2
Channel status/channel fault LED
Table 6- 3
Channel status
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Meaning of the PWR LED
PWR Meaning
Supply voltage L+ missing
Off
Supply voltage L+ available
On
Meaning of the DIAG LED
DIAG Meaning
Backplane bus supply of the ET 200SP not okay
Off
Module parameters not configured
Flashing
Module parameters configured and no module diagnostics
On
Module parameters configured and module diagnostics
Flashing
Meaning of the channel status/channel fault LED
Channel fault Meaning
Off Off
On Off
Off On
/
Alternately flashing
Process signal = 0 and no channel diagnostics
Process signal = 1 and no channel diagnostics
Process signal = 0 and channel diagnostics
Channel waiting for user acknowledgment
Digital input module F-DI 8x24VDC HF (6ES7136-6BA00-0CA0)
Manual, 07/2013, A5E03858068-01