Siemens SIMATIC ET 200SP Manual page 28

Meaning of the LEDs
The following tables contain the meaning of the status and error displays. Corrective
measures for diagnostics alarms can be found in section Diagnostics alarms (Page 30).
DIAG LED
Table 5- 1
Channel status/channel fault LED
Table 5- 2
Channel status
PWR LED
Table 5- 3
Analog input module AI 2xU/I 2-/4-wire HS (6ES7134-6HB00-0DA1)
Manual, 09/2018, A5E03576060-AF
Error display of the DIAG LED
DIAG 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/error display of the channel status/channel fault LED
Channel fault
Off Off
On Off
Off On
On On
Status display of the PWR LED
PWR Meaning
No supply voltage L+
Off
Supply voltage L+ present
On
Meaning
Channel deactivated or no load voltage L+
Channel activated and no channel diagnostics
Channel activated and channel diagnostics
Not permitted (error)
Interrupts/diagnostics interrupts
5.1 Status and error displays
27