KNX/EIB ETS4: Invalid Frame

[Warichet]

Hi,

I just checked my bus with ETS4, bus monitor and got non-stop "Invalid Frame"
Don't know since when this problem appeared.

Any hint about how can I start troubleshooting, please ?
Thank you

BusMon1.jpg

[Klaus Gütter]

These Frames look "almost" like busmon Frames, but the checksum is missing and the additional busmon info (timestamp and sequence counter) are constant.
Which kind of USB or IP Interface do you use?

Klaus

[Warichet]

I'm using the HS as the interface to KNX.
I must admit that I have't run the bus monitor since the ETS4 upgrade, months ago, so it could be I've introduced the trouble without knowing.

Your question about interface triggers some ideas, that is; I'll try to run busmon via another interface.
Thanks for the hint

[Warichet]

I've setup my good old RS232 I/F on COM1:, no more "Invalid Frame" .... but .... no solution yet
My temporary conclusion is:
- those "Invalid Frame" are generated by the combination ETS4 Busmon + HS + maybe some unknown parameter,
- they are not generated continuously, hence no bus pollution

The HS is running fine since months. Any hint as what to check on the HS regarding the "Invalid Frame" ? One of the last things I've done is to change the domain name of my LAN. I don't think this has any impact on Busmon.

Also, where could I find the information to decode those "Invalid Frame" packets ?

Thanks

[Klaus Gütter]

Seems to be a known Problem with Gira HS used by ETS in Busmon mode:
https://knx-user-forum.de/forum/öffe...ültiger-frame

[Warichet]

Seems to be a known Problem with Gira HS used by ETS in Busmon mode:

Indeed
I've read the referenced post, carefully, haven't seen any fix