CAN can be used for speed up to 1M bps (about 40 meters) with a well designed CAN network. For short distance, I2C, SPI, UART should all work. ... -- View this...
Funny N.
funnynypd@...
Apr 3, 2008 4:12 am
6544
After many people from this forum sending us inquiries (emails and phone calls) about our SAE-J1939 simulator products in the past months, we put more...
Funny NYPD
funnynypd@...
Apr 3, 2008 4:22 am
6545
Have you tried the Microchip C library? It seems many people are using it and sharing experiences. Funny N. Au Group Electronics, New Bedford, MA,...
Funny NYPD
funnynypd@...
Apr 3, 2008 5:07 am
6546
With todays' technology, a C-model will enables you easily build many industry-level products. I think this is why companies cannot open their C language...
Funny NYPD
funnynypd@...
Apr 3, 2008 5:07 am
6547
After many people from this forum sending us inquiries (emails and phone calls) about our SAE-J1939 simulator products in the past months, we put more...
Funny N.
funnynypd@...
Apr 3, 2008 5:09 am
6548
That is similar to a CAN bridge but with opto-couplers, it will help provide isolation between networks. One concern is about the speed of your network, how...
Funny N.
funnynypd@...
Apr 3, 2008 8:02 pm
6549
Hello, Due to the loopback function of a CAN transceiver, two transceivers cannot be hooked up and isolated directly. Logic functions are required. There are...
Corrigan, Steve
s-corrigan1@...
Apr 3, 2008 9:52 pm
6550
The SAE-J1939 defined the Bridge as: "Bridge — A device which stores and forwards messages between two J1939 network segments. This permits changes in the...
Funny NYPD
funnynypd@...
Apr 4, 2008 3:08 am
6551
Hi, if one decide to use a simple CAN Repeater for CAN bus isolation you can not use as long network cables as mentioned in the standards for different CAN bus...
Bertil Bäck
bertil.back@...
Apr 4, 2008 10:54 am
6552
A friend asked me today about using the internal oscillator of a Microchip PIC for a CAN application. Is this possible, advisable? If one looks around at...
YAP
x112358@...
Apr 14, 2008 10:16 am
6553
We made some early experiments in the past with the PIC at 1Mbps, and it wasn´t stable. For lower speeds (up to 125kbps), no problem. So we put in a 16 Mhz...
Osmar Yang
oy@...
Apr 14, 2008 12:07 pm
6554
We had a 50KHz CAN application last year, running on the internal (PIC18F2480) clock - it also failed to work reliably on about 15% of boards. We found it was...
ICull@PGT
ICull@...
Apr 14, 2008 1:52 pm
6555
There are lots of talk about this recently. It is heavily depends on your application environment and communication distance. For instance, SAE J1939 does has...
Funny NYPD
funnynypd@...
Apr 14, 2008 7:58 pm
6556
Hi, Im using str912 (32 bit) controller with a CAN 2.0 B. I have 10 nodes on the network one master and nine slave. I use identifiers for each node. When all...
Egemen Gül
egemeng@...
Apr 21, 2008 8:06 pm
6557
Hi, Odds are you've not designed your protocol correctly. Without posting more information it's hard to say more than that. Do remember, the nature of the CAN...
John Dammeyer
johnd@...
Apr 21, 2008 9:56 pm
6558
The CAN itself was designed to avoid those thing from happening. So please check with your software first. Funny N. Au Group Electronics, New Bedford, MA,...
Funny NYPD
funnynypd@...
Apr 21, 2008 10:40 pm
6559
Hi All, I am trying to scope the different frame types on my bus. Data and RTR frames are no problem, but generating overload and error frames are. I am trying...
Mike Brooks
mbrooks@...
Apr 22, 2008 12:38 pm
6560
Hi Mike, An overload frame was defined in the early CAN 1.0 spec as something to generate when the device's state machine was incapable of internally ...
John Dammeyer
johnd@...
Apr 22, 2008 4:52 pm
6561
Hello Mike, I don't think overload frames are in use anymore. Most modern controllers have some kind of mailbox or buffer management, and if you are too slow...
Bende Georg
georg.bende@...
Apr 24, 2008 8:58 am
6562
Hi all, I have faced the following problem with an ECU transmitting on a system using protocol CAN 2.0B ( J1939 ) a SRR bit not dominant (0) as requested but...
Gianmarco Marchesi
gianmarco.marchesi@...
Apr 24, 2008 10:46 am
6563
You mean that your tool is able to decode the communication on the BUS but you KNOW this communication is not valid? I think one part is wrong... How could a...
MARC Erwan
erwan.marc@...
Apr 24, 2008 12:39 pm
6564
Hi, I think I have seen the same problem in a CAN device. I will post a picture so you can say if it's the same problem as you also saw. ...
Bertil Bäck
bertil.back@...
Apr 24, 2008 1:27 pm
6565
Hi Gianmarco, I do not understand what the problem is. If you requested to transmit a CAN message of the base format (11-bit identifier), then SRR bit is the...
Thilo Schumann
canlist@...
Apr 24, 2008 1:46 pm
6566
Hi Thilo, thank you, Yes the transmitter was expected to send a 29 bit identifier and so according a SRR recessive, but really was transmitting a dominant...
Gianmarco Marchesi
gianmarco.marchesi@...
Apr 24, 2008 2:26 pm
6567
Hi, I wrote a software that has CAN messages sending at a baud rate of 125 kbps. I need to test it and see if I am sending correct messages. For that, I only...
Tummala, Girish
Girish.Tummala@...
Apr 24, 2008 4:18 pm
6568
I can tune one of our CAN data center product to 125K bps, please let me know if you are interested. http://www.auelectronics.com/System-DCSJ1939-001.htm Funny...
Funny NYPD
funnynypd@...
Apr 24, 2008 5:39 pm
6569
Are you working with a Daimler implementation? They are the ones that use the CAN B and CAN C terminology when describing their networks. If so, they are two...
cyrilla@...
Apr 24, 2008 5:53 pm
6570
Hi, ... I guess they mean a highspeed-to-lowspeed (fault tolerant) adapter. Well, fortunately EMS offers such devices ;-) ...
Sebastian Haas
canlist@...
Apr 25, 2008 6:34 am
6571
Dear All, I wish to connect 4 CAN nodes together using a wireless CAN link. Distances between nodes are about 50m. Can anyone recommend a suitable device to...
Charles Pinkstone
CPinkstone@...
Apr 25, 2008 4:02 pm
6572
Dear All, I wish to connect 4 CAN nodes together using a wireless CAN link. Distances between nodes are about 50m. Can anyone recommend a suitable device to...
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