Thread: CAN Bus Layout
View Single Post
  #1   Spotlight this post!  
Unread 02-02-2010, 13:00
Dale's Avatar
Dale Dale is offline
Head Coach & Mentor
AKA: Dale Yocum
FRC #1540 (Flaming Chickens)
Team Role: Coach
  
Join Date: Feb 2005
Rookie Year: 2005
Location: Portland, OR
Posts: 499
Dale has much to be proud ofDale has much to be proud ofDale has much to be proud ofDale has much to be proud ofDale has much to be proud ofDale has much to be proud ofDale has much to be proud ofDale has much to be proud ofDale has much to be proud of
CAN Bus Layout
A slightly different CAN problem has now emerged. Some of our Jaguars are working and some not. As soon as the CAN daisy chain reaches one of the inoperable Jaguars, all of the rest of the Jaguars downstream from it are invisible.

Are the pins on both of the CAN sockets on the Jaguar wired together in parallel or does the Jaguar process the CAN bus signal in some way and rebroadcast it? Could a bad firmware load or some setting we accidentally made cause this?

A related question would be does it matter, except for RS232, which of the two connectors you plug the CAN cables into? We've been careful to always go into the one with the 10101 on it and out the other but if this is a true bus I suspect it doesn't matter.
__________________
2016 PNW Championship Chairman's; 2016 Winner Oregon City District, 2015 PNW Championship Chairman's; 2015 PNW District Engineering Inspiration; 2015 PNW District Finalist; 2014 PNW Championship Chairman's; 2014 Championship Innovation in Controls; 2013 Chairman's (Oregon); 2013 Finalist (OKC); 2012 Winner (OKC); 2012 Chairman's (OKC); 2012 Woody Flowers (Oregon); 2011 Volunteer of the Year (Oregon); 2011 Finalist & Captain (San Diego); 2011 Innovation in Control (San Diego); 2010 & 2007 Chairman's (Oregon); 2010 Regional Champions (Colorado); 2010 Innovation in Control (Colorado); 2009 & 2008 Engineering Inspiration (Oregon); 2008 Regional Champions (Oregon); 2007 Regional Finalist (Oregon); 2005 Rookie Inspiration (PNW)