Description

Possible cause

Solution

When the device is commissioned, the following error message appears: “The physical address: x.y.z is being used by another device.”

Physical addresses have been used multiple times.

Check and/or reset physical addresses and re-assign.

Setting up additional physical addresses

Troubleshooting using ETS

When the device is commissioned, the following error message appears: “This is the certificate of another device.”

An incorrect device certificate was scanned or an incorrect certificate key entered.

Checking device certificates

Changes to the settings for the IP address were not copied to the device.

Only partial programming was performed.

Perform full programming of the device (physical address and application program) via the ETS software (menu item: ‘Program’ > ‘Physical address & application program’).

KNX IP Secure routing is not possible.

The ETS detects dummy applications as non-secure.

Remove the dummy applications from the project.

The project cannot be opened.

The project password is unknown.

The project password cannot be reset.

Create the project again, reset all devices to factory settings, and commission it again.

A device cannot be added to the project.

A QR code for the device certificate is no longer available or cannot be assigned to a device.

The 6X6-digit certificate key for the device certificate is unknown or can no longer be assigned to a device.

The device can no longer be commissioned and must be disposed of.