Siemens LOGO! CIM - LED Indicators

Structure of the device
2.2 LEDs to display operation
LOGO! CIM
Operating Manual, 10/2021, A5E51250518-AA
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2.2 LEDs to display operation
The LEDs on the CIM provide information about the operating status of the device.
Meaning of the LEDs
LED
Status
Meaning
System diag-
nose (DIAG)
On
The LED light is green when CIM is in RUN mode.
On
CIM is booting or waiting for firmware update.
Flash
CIM is updating firmware.
On
Firmware is crashed.
Red flashing
CIM is powered by capacitor.
LAN (P1, P2, P3,
P4)
Flash
Port is receiving or sending data across Ethernet.
On
Port is already connected to Ethernet.
Off
No connection to Ethernet.
mPCIe
Off
The cellular module is not detected.
Flash
The cellular module is initializing or registering.
On
The cellular module has initialized and registered successfully.
Flash
The cellular module is receiving/sending data.