KNX Group Address

Get started with your KNX group address structure

Let the KNX Tool generate your KNX group address structure automatically and export the XML file to ETS.

[NOTE: The KNX Group Address structure feature is only available for the Business and Premium subscriptions. o upgrade your subscription, go to System > Admin Settings > Subscription.]

How everything is connected:

First you have to create a Group address set (a GA Set) for each function. E.g. for lighting you might want to create the following group addresses: SWITCH, FEEDBACK, DIMMING, VALUE etc.
You need to create one GA Set for each function like Lighting, Shutters, Heating, Music and so on.

[NOTE: You should only link a GA Set to actuators, functions or building structure - not to pushbuttons since you can have many pushbuttons for one output/function.]

[TIP: you can use dynamic structures, i.e. depending on which room or floor you put your device in it will create the group addresses in the right places in the structure.]

WHY: One big reason why you should use this feature is the consistency. By setting up your KNX group address strategy in a system like the KNX Tool you can start to finetune the strategy, make the usual functions and then start to add the more seldom ones. Next time you have a similar project it’s already there and you don’t have to rethink the strategy again, the energy you put down on it can be used to finetune it – not to start from scratch every time.

WHY: It is a really god exercise to fill out your structure in this way, it quickly shows all the flaws you have when you just copy and paste it from one project to the next.


 “Group Address profile” drop down let you select different profiles you have set up, you can make different profiles that suits your project like “big project” or “small project” etc. all with a different KNX group address structure.

Add Group Address” button will allow you to add KNX group addresses manually or change current once.

Refresh GA” will reload channel text and do a kind refresh

Reset GA” will reset all made changes and generate the Group address structure again. This is needed if you e.g. link devices to new GA sets etc.

Move UP” button moves one or the whole structure up.

Move DOWN” button moves one or the whole structure down.

EDIT” button lets you edit and move single group addresses.

EXPORT” button lets you export the Group Address file into an ETS4 XML format which can be imported into ETS.
[TIP: When importing a Group address structure into ETS it’s not deleting the old structure but rather copying it on top on the old one, meaning name will change and new GA’s will be added but old GA’s which are not covered in the imported file will remain.]

In the actuator report page you can select which Group Addresses you want to show in the report.


The “Group Address” button will select all GA’s in the whole device.
Or if you wish to do a single channel selection then simply press on the group address field and you have the option to select which one you want to show or to add one manually.

[NOTE: if you add Group addresses manually here it will not be added to the GA Structure, it’s only printed as text in the actuator report.]

Actuator report PDF: For programming or debugging you can print the GA’s in the Actuator report:

In the actuator report page you can select which Group Addresses you want to show in the report.


Set up the Group Address structure

To get started you first need to set up your Group Address structure, go to System > Group Address Settings:

In the General Information tab, you can name your different profiles.

This makes it possible to have different structures for different types of projects.


Create your Main and Middle group structure in the Main and Middle group tab.

First you have to define how your MAIN and MIDDLE structure looks like, is it building based or function based?

[NOTE: you can create a different structure for each profile.]

Start with creating your MAIN structure, then you can fill in the MIDDLE structure. This is laying out your main structure where you can place group addresses. The next step is to create a GA Set that you can link to a device.

The dynamic rows Building, Floor and Room is used when you have a dynamic structure in the Group Address Set. Example; you have a Group address that is depending on which floor the device is placed in the project. Or if you want to create a Light scene group address for each room, then you can create the Group address as dynamic room and link it to a Room structure in the Project, building, rooms tab.

[NOTE: building structure in the building view is an important part of the dynamic structure, not only does it define how rooms are printed in the report it also defines the dynamic structure. You can change the indexing for each rooms and floors in the building view.]



 In the Group Address Set tab you can create different “GA  Sets” you can link to your devices.

Only one per project: check this if this GA should only be generated once for this project. E.g. a global alarm Group Address.

Name: Name the GA Set

Output print format: set the text for the Group Address, you can use plain text or prefix for indexing like %s which will set the subgroup name or the %t for the device tag given for each device in the actuator report page.

Start with: if you like to start with your GA’s at a certain number like ‘1’ or ‘100’ then you can give the start number here and the GA’s will be added from here.

GA Profile: Select the profile for selecting the MAIN and MIDDLE group names.

MAIN Group: Set the Main group name, or use dynamic settings from the building structure.

MIDDLE Group: Set the Middle group name, or use dynamic settings from the building structure.

SUB Group: The Sub group name for the GA. This name is placed in the print output format with %s.

Offset: Beside the ‘Start with’ you can make individual offsets inside a GA Set.

Only one per device: check this if this GA should only be generated once for this device. E.g. a device error Group Address.

Only one per project: check this if this GA should only be generated once for this project. E.g. a global alarm Group Address.


In the Project, building, rooms tab, you can link GA sets to a project or a building structure.

This is useful if you have a specific sets of group addresses you always have in your project.


Link your Group Address set to devices

In Manage KNX Devices page (go to System > KNX Devices) you can select your device from the list or add a new device. Select the KNX Device and press the edit button (The pen icon). Scroll down to the place where you set the channel numbers for the device. Then link a GA Set to a device. You can link one set for each profile.

[TIP: A device can have several “pages”, each page creates one table meaning with several pages you device will show up in the report as several tables. In the report you can select if you use the page or not.
- This is useful if you for example have a device with many channels like a DALI gateway with up to 64 channel, to make a nicer printout you can divide this into two pages 32+32 meaning if you do not use more than 32 lamps in you DALI gateway you can select only one page and it will print a smaller table with less empty channels.
- This can also be used if you have a multi functional device with both inputs and outputs and you want to have different Group addresses for the inputs and outputs.]

It’s possible to change a single channels GA Set later in the Actuator report page.

[NOTE: If you change the default GA Set for a channel you need to Refresh the GA structure to make the change take effect.]



Click the link below to schedule a free live video appointment where we will show you how to setup and customize the KNX TOOL for your current projects.



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