Siemens SIMATIC ET 200SP Manual page 39

Interrupts/diagnostics alarms
6.1 Status and error displays
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 45).
Table 6- 1
Table 6- 2
LEDs
Channel status
Table 6- 3
42
Error display DIAG LED
DIAG LED Meaning
Backplane bus supply of the system is interrupted or switched off.
Off
Module parameters not assigned
Flashes
Module parameters assigned and no module diagnostics
On
Module parameters assigned and module diagnostics
Flashes
Status and error display LED channel status / channel error
Channel error
Off Off
On Off
Off On
On On
PWR LED status display
PWR LED Meaning
Missing 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)
Analog input module AI 2xU/I 2-/4-wire HF (6ES7134-6HB00-0CA1)
Equipment Manual, 05/21, A5E51055079-AA