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+--- Thread: grp.update function (/showthread.php?tid=154)
grp.update function - gtsamis - 08.12.2015
Just notice some strange behavior on my LM3 and heavy load on BUS. It turns out that function grp.update send telegram to bus although it shouldn't.
I am not sure if that happened on new firmware (20150917) or it was working like that before.
Can someone else please check if there is actually a problem with grp.update?
I am attaching a screen shot from group monitor capturing a grp.update on some dummy address used only for visualization.
![[Image: ITfhZBV.png]](http://i.imgur.com/ITfhZBV.png)
RE: grp.update function - admin - 08.12.2015
grp.update sends telegrams to KNX/IP, but not to KNX/TP. Make sure that you don't have any loops with multiple IP devices having access to the same TP line. You can also add filter rule to this group address.
RE: grp.update function - gtsamis - 08.12.2015
(08.12.2015, 10:10)admin Wrote: grp.update sends telegrams to KNX/IP, but not to KNX/TP. Make sure that you don't have any loops with multiple IP devices having access to the same TP line. You can also add filter rule to this group address.
RTFM!!!! The manual is so clear that has the TP bus with bold.... but someone ignores it 
![[Image: 0ts7ZLK.png]](http://i.imgur.com/0ts7ZLK.png)
Thank you for pointing! Filtering dummy addresses will do the job!