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Chapter 2: Overview
2.7.4 Upgrade Module USB-HID Status
The upgrade module USB-HID has three LEDs on the rear side to indicate the connection status:
CPU module, rear view
CON module, rear view
Status upgrade modules USB-HID.
LED 1, 2, and 3: Status.
Position
LED
Status
Description
1, 2
Device LED (orange)
Off
No USB-HID device or not supported; USB device connected
Flashing fast
USB-HID device active
On
USB-HID device ready or DKM Modular Extender in command mode
3
Status LED (orange)
Off
• No power supply voltage
• CPU Unit: DKM Modular Extender in command mode or no connection
• CON Unit: Keyboard in command mode
Flashing slowly
CON Unit: DKM Modular Extender in command mode or no connection
Flashing fast
Operating status