---
title: "RFbus description"
canonical: "https://docs.cuesystem.com/space/CVCHELP/554631625/RFbus%20description"
format: markdown
---
---

RFbus is used as a virtual connection between Enika Rx1 DIN/LOG receiver and Enika wireless button panels Tx (Time 2, Time 4, Element 2, Element 4, Cross 4, Pocket 1, Pocket 4, Key). 

Rx1 DIN/LOG should be connected to any controller, uniCUE, or IP interface RS-232 bidirectional serial port. Tx wireless button panel's RFbusConnector must be connected to the RFbus channel of Rx1 DIN/LOG receiver. 

#### Example of a connection in a Composer's Configuration window: 

![image](media://7c247143-1b5a-40f5-b7f9-1e659acc7276)

Each Tx wireless button panel has a unique UnitID, which has to be set in its properties.  

You can set this UnitID by following way: 

1. Do CVC configuration as described above.
2. Connect real Rx1 Din/LOG receiver to the serial channel.
3. Debug CUEunit in Hardware Debug Mode and check Display Debug Messages
4. Press any button on some Tx wireless button panel. The following debug message will be shown: “!!!Unregistered transmitter, UnitID: xxxxx, Battery OK”
5. Enter number xxxxx to UnitID property of appropriate Tx wireless button panel (12345 in the example below)
6. Repeat steps 4 and 5 for each Tx wireless panel in your project.
7. Now you can check if your configuration works well. Start to debug mode again. If you will press some button on the Tx wireless button panel, the following message should be displayed in debug window: “Registered transmitter, UnitID: xxxxx, Battery OK”.
8. In debug messages can be also written “Battery low”. In this case, replace the battery in this panel.