This forum uses cookies
This forum makes use of cookies to store your login information if you are registered, and your last visit if you are not. Cookies are small text documents stored on your computer; the cookies set by this forum can only be used on this website and pose no security risk. Cookies on this forum also track the specific topics you have read and when you last read them. Please confirm that you accept these cookies being set.

KNX/TP: Trasmitter Error (send 0 receive 1)
#1
Sometime i found this error in the  error log, what is the meaning of this error...???
Reply
#2
This means that transmitter was not able to send data to KNX. Nothing to worry about if this is not frequent, KNX does several transmission retries, so no data will be lost.
Reply
#3
Hi
I see it too. Not so often but from time to time it happen. Do you have any explanation of this behavior?
What do you exactly mean "This means that transmitter was not able to send data to KNX"? Was the bus busy for a long time? Or was it a bus power supply failure? Was the packet NACKed?
LM5Lp, firmware: 2018.08.22 and 2021.12.15, FlashSYS v2, ARMv7 Processor rev 5 (v7l), kernel 4.4.151 and 4.4.259
Reply
#4
Logic 0 is sent by pulling the bus voltage low, in case of an error the transmitter was not able to do this. It's hard to tell what caused it, most probably a collision.
Reply
#5
Collision can be a good reason. Thank you.
LM5Lp, firmware: 2018.08.22 and 2021.12.15, FlashSYS v2, ARMv7 Processor rev 5 (v7l), kernel 4.4.151 and 4.4.259
Reply


Forum Jump: