Hi sir, Why they took error count 127 as a border between active node and passive node.. Why not other count number.. I tried in CAN data sheet too but didn't get please will you help me...!!!?? Thank you.
hi everyone, I have one query regarding the error frame. if can controller detects any error, then the current message is discarded and the error frame is transmitted as per tx and RX counter. in error handling can be done two types one transmitter and another receiver. If the transmitter detected bit error then the transmitter sends an error frame. if the receiver side detects any error then the transmitter only transmits an error frame or receiver side transmits error frame.
All nodes are monitoring every frame transmitted on the CAN bus. Whenever a node sees a bit error, stuff error, CRC error, form error or acknowledgment error, the node detecting the error will generate an error frame if the node is error active. If the node is error passive, the detection of the error only impacts the node’s error counters. Bit errors and acknowledgment errors can only be detected by the transmitting node. All other errors can be detected by all nodes on the bus.
hi, thanks for your explanation, I have some more doubts regarding the above comment .now a little bit I am simplifying by taking one example. let us assume nodes A, B, and c which are connected in can bus. 1)first, node A transmits a data frame to node B than in-between node A detected bit error then the TX counter of node A is increased by 8. Now Node A is in error active state so it will automatically transit the error active frame to Node B, C. After that node A again retransmit the data frame to node B, now node B successfully received data frame and sends ack bit from node B to A then node A TX counter is decremented by 8 . if I am right? 2)second, node A transmits a data frame to node C than in-between node C detected CRC error then the RX counter of node C is increased by 1.so, now Node C is an active error state. now, my question is Node C will transmit error active frame to nodes A, B or not? otherwise, node A will transmit error active frame to node B, C? if it is right then please explain in between operation from node c is detected CRC error and before transmission of error active frame of node A to Node B, C. 3) please explain this point "If the node is error passive, the detection of the error only impacts the node’s error counters." in taking some example maybe it will give more clarity.
![[ES-EN-50] ERROR CONFINEMENT IN CAN PROTOCOL || BASICS OF CAN PROTOCOL ||](/img/n.gif)
Very clear explanation. Thank you!
Best explaination so far I can find
Clean, neat way of presenting a concept. Especially notes are so helpful. Appreciate your effort and time. Thanks a lot.
Superb.. I was looking for this information for a long time.. Didn't find this detailed information anywhere.. Thanks a lot
Very clearly explained!
Thank you!
nice explanation
very neat and clear (Y)
I am getting error passive and on output window. getting error of error frame what to do how to solve
Please provide more videos on CAN
Pls provide information about to get response for tpdo
Hi sir,
Why they took error count 127 as a border between active node and passive node.. Why not other count number.. I tried in CAN data sheet too but didn't get please will you help me...!!!??
Thank you.
Thank you
Memerlukan lebih ramai orang jadi sebarkan video ini lebih banyak
After can bus off again when that bus will be active and how?
Is bit stuffing occurred in all over the frame?
Or it is only occurs in data field???
I'm not a specialist, but as far I understand "all over the frame"
there is good video on the channel "
eapbg", really recommended
Bit stuffing occur at all field except for ACK field and End of Frame (EOF).
hi everyone,
I have one query regarding the error frame.
if can controller detects any error, then the current message is discarded and the error frame is transmitted as per tx and RX counter.
in error handling can be done two types one transmitter and another receiver. If the transmitter detected bit error then the transmitter sends an error frame. if the receiver side detects any error then the transmitter only transmits an error frame or receiver side transmits error frame.
All nodes are monitoring every frame transmitted on the CAN bus. Whenever a node sees a bit error, stuff error, CRC error, form error or acknowledgment error, the node detecting the error will generate an error frame if the node is error active. If the node is error passive, the detection of the error only impacts the node’s error counters. Bit errors and acknowledgment errors can only be detected by the transmitting node. All other errors can be detected by all nodes on the bus.
hi,
thanks for your explanation,
I have some more doubts regarding the above comment .now a little bit I am simplifying by taking one example.
let us assume nodes A, B, and c which are connected in can bus.
1)first, node A transmits a data frame to node B than in-between node A detected bit error then the TX counter of node A is increased by 8. Now Node A is in error active state so it will automatically transit the error active frame to Node B, C. After that node A again retransmit the data frame to node B, now node B successfully received data frame and sends ack bit from node B to A then node A TX counter is decremented by 8 . if I am right?
2)second, node A transmits a data frame to node C than in-between node C detected CRC error then the RX counter of node C is increased by 1.so, now Node C is an active error state.
now, my question is Node C will transmit error active frame to nodes A, B or not?
otherwise, node A will transmit error active frame to node B, C? if it is right then please explain in between operation from node c is detected CRC error and before transmission of error active frame of node A to Node B, C.
3) please explain this point "If the node is error passive, the detection of the error only impacts the node’s error counters." in taking some example maybe it will give more clarity.
Thank you
Thank you