Hi CAN List, I have a puzzler than I would truly appreciate your opinion on: If there is one node on the CAN Bus on it's own, during power-up under the...
Andy Campbell
andy@...
Feb 1, 2005 11:44 am
4409
... Look at http://www.can-wiki.info/CanFaq or http://www.can-wiki.info/CanFaqErrors -- Falls es Ihre Zeit erlaubt, Sie finden uns in Nürnberg zur "Embedded...
Heinz-Juergen Oertel
oe@...
Feb 1, 2005 11:45 am
4410
As Bill Cosby used to say, "In case of a tie, 2 wins out over 1." With only a single node on the "bus" (how much of a bus is it with only 1 node? Is it the...
Allen Pothoof
apothoof@...
Feb 1, 2005 4:44 pm
4411
The "typical" CAN bus topology is linear but there has been some experimentation with star topologies. This, in turn, has engendered some discussion on this...
Allen Pothoof
apothoof@...
Feb 1, 2005 4:50 pm
4412
... How about: http://www.proloc.com.pl/zdzich/pdf/sieci/can/CANphy.pdf or: http://www.inp.nsk.su/~kozak/canbus/CANphy.pdf -- newell -- Archives and useful...
Scott Newell
newell@...
Feb 1, 2005 4:57 pm
4413
I've still got the document. any suggestions of where to post it? Ed. in the meantime, I'll email it directly to jerome. ... From: "Allen Pothoof"...
Ed Goldstein
ed@...
Feb 1, 2005 5:17 pm
4414
I agree that you are mixing protocol layers, having recently implemented address claiming I would like to add my 2-bits worth as a review of my implementation....
Neil Frederickson
neil@...
Feb 1, 2005 6:11 pm
4415
Hi all, Sorry, I cannot agree with you Neil. My position is that: The NMEA 2000 (Appendix D.2.2.2) / ISO 11783-5 document states for "State 2": "If the message...
Andy Campbell
andy@...
Feb 1, 2005 7:47 pm
4416
Andy CAN definition does not allow you to know how many nodes above one have acknowledged a message. The CAN specification just says that at least one node...
John Dammeyer
johnd@...
Feb 1, 2005 8:44 pm
4417
Hi all, I am back the forum after an absence working in another project without CANopen. My question: I am defining the objects for my device, and I am...
Osmar Yang
oy@...
Feb 1, 2005 9:46 pm
4418
Andy I saw your reference to J1939/NEMA 2000 and assumed address claiming was the same for both specifications. I now realize they are not. What I stated is ...
Neil Frederickson
neil@...
Feb 1, 2005 9:47 pm
4419
I guess what Andy had in mind is the possibility that some node might generate an ERROR FRAME, instead of an ACK. A more careful wording would be: ...at least...
Osmar Yang
oy@...
Feb 1, 2005 9:47 pm
4420
Osmar, There is no such thing as an ERROR FRAME. An ERROR FLAG is a sequence of 6 domininant bits in a row, on top of an existing message, violating the ...
John Dammeyer
johnd@...
Feb 1, 2005 10:59 pm
4421
Hi Is anybody using the Peak Developer SDK, any comment appreciated. Blv -- Archives and useful links: http://groups.yahoo.com/group/CANbus Subscribe and...
Masotta
masotta@...
Feb 2, 2005 12:36 am
4422
Hi Osmar, ... You are right Osmar. The indicies from 2000h to 5FFFh are manufacturer specific and the indicies from 6000h to 9FFFh are device profile or ...
Thilo Schumann
headquarters@...
Feb 2, 2005 8:57 am
4423
Hi Neil, I am not very familiar with the address claiming procedure of J1939. But let me add my 2 cents. ... A CAN controller (node) will not enter the error...
Thilo Schumann
headquarters@...
Feb 2, 2005 9:02 am
4424
Hi Osmar, you are right. DS-301 V4.02 clearly states in chapter 6.2.2 table 1: 2000-5FFF Manufacturer Specific Profile Area 6000-9FFF Standardised Device...
Klüser, Jürgen
Juergen.Klueser@...
Feb 2, 2005 9:05 am
4425
... This is absolutely correct. The area 0x6000 - 0x9FFF hosts device profiles (can be 1 to 8) released by the CiA. And the object 1000 has to refer to them by...
Heinz-Juergen Oertel
oe@...
Feb 2, 2005 9:33 am
4426
Ooops, you´re right, ERROR FLAG is correct it was careless wording from me! Greetings, Osmar ... De: "John Dammeyer" <johnd@...> Para:...
Osmar Yang
oy@...
Feb 2, 2005 11:25 am
4427
Hi CAN List, Thank you for all your comments so far - I think we're getting close. I would like to fine tune my question to hopefully get a simple yes/no ...
Andy Campbell
andy@...
Feb 2, 2005 12:28 pm
4428
Andy, That is our clear understanding. Cheers Bruce Coward Offshore Systems (UK) Ltd T: 01425 610022 F: 01425 614794 E: bruce@... ... From:...
Bruce Coward
bruce@...
Feb 2, 2005 1:26 pm
4429
Hi Thilo Thanks very much for the clarification. What I had missed was that the TEC counter is increased until the error passive state is entered. Regards Neil...
Neil Frederickson
neil@...
Feb 2, 2005 5:59 pm
4430
I have VHDL source of a can controller, but i don't know what it does , do you know about any resource on algorithms or structures used in a can controller...
milad omidi
omidi_sbu@...
Feb 3, 2005 6:55 am
4431
Hi Milad, ... SJA1000 datasheet from Philips is one of the best I have seen. You should also be familiar with structure of CAN-telegrams (specification can be ...
Heikki Saha
heikki.saha@...
Feb 3, 2005 8:04 am
4432
Hi All, I was always learned that a CAN-controller will forever try to send a message when it is not acknowledge. So how the upper layer handles this is of no...
Rene_Heijma@...
Feb 3, 2005 9:59 am
4433
All, I am interested in knowing the memory requirements of CAN HLPs (like CANopen, Devicenet etc). I realize the memory footprint changes based on the...
Janakiraman, Hareesh
hareesh@...
Feb 3, 2005 9:01 pm
4434
Hello, With CANopen, you can practically use any amount of memory, depending on your implementation - what set of features you implement. The smallest I have...
Heikki Saha
heikki.saha@...
Feb 4, 2005 6:47 am
4435
... I have completely to agree with the statements of Heikki Saha. e.g. ... At least with some larger applications, it's mostly the application needs that are...
Heinz-Juergen Oertel
oe@...
Feb 4, 2005 1:50 pm
4436
Hello, I am implementing a CAN network which has 2 ECU, I have placed the 2 ECUs close to each other the physical layer is a single strand wires having a ...
Mohammed Samdani
mohammed.samdani@...
Feb 4, 2005 3:28 pm
4437
Maybe we have the problem again with the node distances <=10cm ? :) How close are the nodes to each other? What is your communication speed? BR, Georg Bende ...
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