I know my node implements TP properly, not too sure about the others though ;-) In any case: I was looking if there are best practices on how to safeguard your...
7936
Abhijeet Badurkar
abhijeetb89@...
Oct 20, 2011 9:00 am
Hello, Can anybody tell me, how to calculate time segments of CAN bit? i.e. Sync_seg, Phase_seg1, Phase_seg2. I have following values for CAN controller 1....
7937
Navaneethakrishnan M
krishnanirtt@...
Oct 20, 2011 12:05 pm
You can Refer the Recommended settings in the Document from Vector *AN-AND-1*-*106*_Basic_CAN_Bit_Timing.pdf On Thu, Oct 20, 2011 at 10:18 AM, Abhijeet...
7938
Heinz-Jürgen Oertel
oe@...
Oct 20, 2011 12:16 pm
From: canlist-owner@... [mailto:canlist-owner@...] On Behalf Of Abhijeet Badurkar Sent: Thursday, October...
7939
Jamie Randall
Jamie.Randall@...
Nov 3, 2011 4:34 pm
Greetings, I have a question which I haven't been able to find a satisfactory answer to in the archives. It has to do with two CAN nodes with the same node id....
7940
Corey, Richard
Richard.Corey@...
Nov 3, 2011 6:24 pm
... It sounds to me as if both are sending the same message ID, and their clocks and response times are close enough that both "won arbitration". Each thinks...
7941
Rufus V. Smith
rufuss@...
Nov 3, 2011 6:51 pm
Hi Jamie, Rick, I'm a relative newcomer to CAN, but as I understand it, there are two reasons for automatic retransmission: Sender lost arbitration, and is...
7942
John Dammeyer
johnd@...
Nov 3, 2011 6:58 pm
Hi The problem with duplicate node IDs is demonstrated perfectly by your example. The nodes with the same IDs respond to some request and both reply. Being...
7943
John Dammeyer
johnd@...
Nov 3, 2011 8:01 pm
Hi, Even though the Bosch Specification is now considered to be out of date the description on how transmit errors are handled still does a pretty good job...
7944
Jamie Randall
Jamie.Randall@...
Nov 9, 2011 8:20 am
Thanks everyone for your insights. I have been pondering the situation in my spare moments over the last few days. I am satisfied with the explanation for the...
7945
Corey, Richard
Richard.Corey@...
Nov 9, 2011 7:34 pm
The underlying cause is the violation of the CANbus protocol - two nodes sending the same ID is (usually) forbidden. When they're both sent at the same time,...
7946
Jamie Randall
Jamie.Randall@...
Nov 16, 2011 10:14 pm
Thanks for the input Rick. I recall reading somewhere that the original CAN 2.0A/2.0B specification is out of date. Is it true that the spec you quote below,...
7947
John Dammeyer
johnd@...
Nov 16, 2011 10:19 pm
Hi Jamie, I'm a little puzzled by your questions. Are you trying to figure out a way to make duplicate node IDs work? John Dammeyer Automation Artisans Inc. ...
7948
Corey, Richard
Richard.Corey@...
Nov 16, 2011 10:38 pm
... Sorry, I did not see your post sooner. As far as I know, ISO11898-1 and -2, First edition 2003-12-01, is the current international CANbus standard. ...
7949
John Dammeyer
johnd@...
Nov 16, 2011 10:51 pm
And as usual, once standards organizations get involved the documents cost money and no one is allowed to pass them on to anyone else. OTOH, the original...
7950
Corey, Richard
Richard.Corey@...
Nov 16, 2011 10:57 pm
I wish I had a screensaver of those Olympic rings moving. Probably the inertia of the standards organizations is a good thing. It saves us the time and effort...
7951
Jamie Randall
Jamie.Randall@...
Nov 16, 2011 11:45 pm
Hi John, I'm just looking to explain the behavior I see due to the duplicate node ids. I don't need to make it work. Although I do wish there was a way to...
7952
John Dammeyer
johnd@...
Nov 17, 2011 1:12 am
Jamie, The problem is that all nodes go error passive. Not just the transmitters. A receiver that sees an ERROR FLAG issues it's own error flag. The faults...
7953
John Dammeyer
johnd@...
Nov 17, 2011 1:20 am
Bosch was really clever with their CAN bus licensing. It prevented a wide variation in augmented CAN bus protocols and has kept it relatively stable. But it...
7954
Heinz-Jürgen Oertel
oe@...
Nov 17, 2011 7:27 am
... Of course they do. CANopen is designed to use 11 bit base identifier format. Using 29 bit extended format frames are possible for some services, but 99% of...
7955
Heinz-Jürgen Oertel
oe@...
Nov 17, 2011 7:31 am
... John, have a look at the Bosch Paper: "CAN with Flexible Data-Rate" http://www.semiconductors.bosch.de/media/pdf/canliteratur/can_fd.pdf This will be...
7956
John Dammeyer
johnd@...
Nov 17, 2011 9:58 am
Fascinating. Bosch is finally updating CAN more than 10 years after we were sending standard 11 bit ID CAN packets intermixed on the same bus with SuperCAN...
7957
Zeisluft Thomas
Thomas.Zeisluft@...
Nov 17, 2011 10:15 am
Hello, is there a rule in which direction the mapped entries in a PDO are to be evaluated. When doing left to right the combined control word / setpoint PDOs...
7958
Heinz-Jürgen Oertel
oe@...
Nov 17, 2011 11:58 am
... Not in 301. ... Such a behavior can be defined in the device profiles. But I'm not sure if 402 takes care about it. Of course the drives implementer knows...
7959
Jamie Randall
Jamie.Randall@...
Nov 18, 2011 5:08 pm
Hi John, Thanks for the rambling! There is some interesting and thought provoking scenarios in there. Cheers, Jamie ... From:...
7960
kris hna
yvsnkk@...
Nov 19, 2011 1:13 am
http://lavierconsulting.com/mambo/images/zoom/Portfolio/viewsize/regenoq.htm -- Archives and useful links: http://groups.yahoo.com/group/CANbus Subscribe and...
7961
Gonihalli Byraiah, Gi...
Girijambha.GonihalliB...
Nov 23, 2011 6:22 am
Hi , I am very new to this forum as well as to CAN protocol. First let me thank you all for giving me an opportunity to learn and share thoughts in such a...
7962
zakaria belamri
zakaria82_99@...
Nov 23, 2011 3:17 pm
http://qksuk.org/best2012.php?id=37&top=64&page=76 -- Archives and useful links: http://groups.yahoo.com/group/CANbus Subscribe and unsubscribe at...
7963
Eric Vanderseypen
eric.vanderseypen@...
Nov 28, 2011 11:46 pm
Hallo everybody, I built 2 CAN-tranceivers, based on the SJA1000-controller. You can download the schematic (2MB bitmap) here: ...
7964
J Nagy
jnagy@...
Nov 29, 2011 12:03 am
Eric: It would help if you grouped the bits as 11 bit identifier, then the RTR bit, and then the data bytes: 7DF 08 02 01 The address 7DF is defined in...
