Siemens Simatic ET 200SP Equipment Manual page 74

Interrupts/diagnostic messages
6.2 Status and error display
DIAG LED
The DIAG LED indicates system and module faults.
Table 6- 1 Meaning of the DIAG LED
DIAG Meaning
Backplane bus supply of the ET 200SP is not OK
Off
Module reintegratable diagnostic event has been resolved and the module or channel is awaiting reinte-
gration. This can include the following events:
Flashes
• Reintegratable over-voltage error
• Reintegratable under-voltage error
• Module detected PROFIsafe CRC error
• Module detected PROFIsafe timeout error
• Reintegratable channel errors
Module parameters are set, and module has active diagnostics (at least one error is present)
Flashes
Module parameters are not configured
Flashes
Module parameters are configured, and module has no active diagnostics
On
Channel status/channel fault LEDs
The A and B LEDs indicate the current level of the associated input signals. At low counting
speeds the A and B LEDs show the actual state of the signals. At higher counting speeds, the
A and B LEDs will change at a limited rate to show activity. A and B LEDs flash when setting
the profisafe address.
Table 6- 2 Meaning of the channel status/channel fault LEDs
A/B Channel F.0
Off Off
On Off
Off On
Flashes
72
Counter input signal is at 0 level and no active channel diagnostics
Counter input signal is at 1 level and no active channel diagnostics
Active channel diagnostics
Prior diagnostic event has been resolved and the channel is awaiting reintegration
Meaning
ET 200SP F-TM Count 1x1Vpp sin/cos HF (6ES7136-6CB00-0CA0)
Equipment Manual, V1.0, 01/2021, A5E47073911-AA