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+--- Thread: KNX Error (/showthread.php?tid=6369)
KNX Error - Frank68 - 27.03.2026
Hi
I have this error on logic-machine
KNX/TP: Transmitter Error (send 0 receive 1)
What could it be due to?
Thank's
RE: KNX Error - admin - 27.03.2026
This can happen if the TP line is overloaded or LM is sending too many telegrams at once. You can ignore this warning if it does not happen very often.
RE: KNX Error - Frank68 - 27.03.2026
(27.03.2026, 07:40)admin Wrote: This can happen if the TP line is overloaded or LM is sending too many telegrams at once. You can ignore this warning if it does not happen very often.
I often get this alarm and also temperature warnings.
The KNX bus is OK, and I use 0.44/0.25 CPU/IO.
What can I check?
RE: KNX Error - admin - 27.03.2026
Provide a screenshot from System config > Network > KNX statistics.
RE: KNX Error - Frank68 - 27.03.2026
(27.03.2026, 09:23)admin Wrote: Provide a screenshot from System config > Network > KNX statistics.
this is the screen shoot
RE: KNX Error - admin - 27.03.2026
You have quite many repeats. The usual cause are LM group addresses that are not linked to any KNX devices on the TP bus.
You should either use virtual group addresses or disable "write to bus" option where applicable. In scripts use grp.update/grp.checkupdate for such group addresses.