Power Led; Connection Led; Application Led - Nordic ID FR22 User Manual

POWER LED

By default, the Power LED indicates if power is supplied to the device.
Green indicates that the device is powered.
No light indicates that the PoE port is not powering the device.
The Power LED turns yellow during the upgrade procedure. DO NOT POWER THE DEVICE OFF
DURING THIS PROCESS.
During the boot sequence after powering the device, the Application LED will also flash red and/or green
(see 2.5.3).

CONNECTION LED

Connection LED indicates whether the reader has established a network (TCP/IP) connection, i.e.
Ethernet, WLAN or LTE connection.
Off: All the communication interfaces are disabled.
Blinking green: Any communication interface is enabled but not connected. For example,
 
Ethernet interface is enabled but the device doesn't have an assigned IP address.
Stable green: At least one communication interface is connected and ready to communicate, i.e.,

the reader has IP address.

APPLICATION LED

The Application LED indicates whether the RFID module is connected to an application (software) or not.
Stable red: RFID module firmware (NUR service) not running.

Slow blinking green: RFID module running, ready to be used.
 
Stable green: An application is connected to the RFID module.

Fast blinking green: An application is sending commands to the RFID module, it's in use.
 
When the Nordic ID FR22 is in "ready" status, the Power, Connection and Application LEDS are all green
at the same time (App LED can be blinking green if the host application is not using the RFID module yet).
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2022-04-04
Nordic ID FR22 User Guide
Version 1.0