Siemens SIMATIC ET 200AL System Manual page 499

Meaning of the LEDs
The following tables set out the meaning of the status and error displays. Corrective
measures for diagnostics alarms can be found in the section Diagnostics alarms (Page 32).
DIAG LED
Table 5- 1
LED for the channel status
Table 5- 2
LED 0, 1, 2 and 3 Meaning
Analog input module AI 4xU/I/RTD 4xM12 (6ES7144-5KD00-0BA0)
Manual, 03/2016, A5E32350124-AC
Error display of the DIAG LED
DIAG LED Meaning
No supply voltage 1L+
Off
Module parameters not assigned
•
Flashes Loading firmware
•
(while the firmware update is being performed, all LEDs retain their current
status)
Module parameters assigned and no module diagnostics
On
Module parameters assigned and module diagnostics
Flashes
Status display of the LEDs 0, 1, 2 and 3
Channel deactivated
•
Off
Channel activated and incorrect parameter assignment
•
Parameter error possible with GSD
•
Channel activated and correct parameter assignment
•
On
Interrupts/diagnostics alarms
5.1 Status and error displays
29