# Read value from KNX heating actuator

**URL:** <https://community.openhab.org/t/read-value-from-knx-heating-actuator/128820>\
**Category:** Bindings\
**Tags:** knx\
**Created:** [November 15, 2021, 8:18pm UTC](https://community.openhab.org/t/read-value-from-knx-heating-actuator/128820 "2021-11-15T20:18:29Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![franks](https://community.openhab.org/user_avatar/community.openhab.org/franks/32/32317_2.png) [@franks](https://community.openhab.org/u/franks)\
**Post date:** [November 20, 2021, 12:47pm UTC](https://community.openhab.org/t/read-value-from-knx-heating-actuator/128820/12 "2021-11-20T12:47:04Z")

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> [@McMaster05](#):
>
> I checked the Groupmonitor but I can only see GroupValueWrites coming from 1.1.1., which is the address of my IP Interface.  
> So it might be that I misconfigured something in my KNX/IP Gateway Setup, here is a screen shot:

In my experience with my own KNX installation as well as discussions with other members installations I’ve came to the conclusion, that there is no bridge configuration that will work a 100% in all situations. My feeling tells me that different vendors KNX IP interfaces simply have different implementations and therefore show different behavior.

That said, I can only say that my MDT based IP interface in a quite old software version (MDT KNX IP Router, SCN-IP100.01, software version 1.0) works best in the router mode. I never got it to work with tunnel mode.

I guess you simply have to try and error your configuration until you found something working. Good advice is always to restart OpenHAB and do some test, before assuming that a given configuration is better than others you have tried.

You can refer to one of my previous posts, like this one: [https://community.openhab.org/t/openhab-3-0-knx-dont-have-channels/111409/24](https://community.openhab.org/t/openhab-3-0-knx-dont-have-channels/111409/24) to get my configuration.

If I do a disable/enable cycle the KNX thing (the heating actor), I can the the relevant bus messages in the group monitor like this:

 ![image](https://community-openhab-org.s3.dualstack.eu-central-1.amazonaws.com/original/3X/8/5/857d72aaa57f0299bb31b5351d533e5b8d69ece1.png)

So OpenHAB issues a group read telegram coming from the device `0.0.0` (the router) and is answered by the heating actor and send back to OpenHAB.

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