Siemens SIMATIC ET 200AL - Page 573

Diagnostics alarms
5.1 Status and error displays
Communication module CM 4xIO-Link 4xM12(6ES7147-5JD00-0BA0)
26 Manual, 10/2017, A5E32352322-AE
DIAG LED
Table 5- 1 Error display of the DIAG LED
DIAG LED
Meaning
Off
No supply voltage 1L+
Flashes
• Module parameters not assigned
(after switching on the supply voltage 1L+)
• Loading firmware
(while the firmware update is being performed, all LEDs retain their
current status)
• No connection to the ET-Connection and/or the fieldbus
On
Module parameters assigned and no module diagnostics
Flashes
Module parameters assigned and module diagnostics
LEDs Cn
Valid for IO-Link port in IO-Link mode.
Table 5- 2 Status displays of the C1, C2, C3, and C4 LEDs
C1, C2, C3, or C4 LED
Meaning
Off
Port disabled or in SIO mode
Flashes
Port in IO-Link mode, device not connected or
port not connected with the configured device
On
Port in IO-Link mode, device not connected
PWR LED
Table 5- 3 Status display of the PWR LED
PWR LED
Meaning
Off
Load voltage 2L+ is missing or too low
On
Load voltage 2L+ present