Quote:
Originally Posted by dyanoshak
Bryscus is correct:
We found that 20' of cable, 100 ohm termination resistors, and ~16 Jags on a bus is a good limit for reliable operation. It may be possible to get more Jags, but the cable lengths will have to be shorter.
-David
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David,
I have to disagree with you on this. According to CAN spec IS0 11898:1993(E) Table 15, the maximum cable distance for 1Mbit/second is 40 Meters not 20 feet.
We have also tested at distances much greater than 20 feet without issue using 120 Ohm's of termination on each end of the BUS.
FYI a termination resistor of 100 ohms is outside of the spec. Teams using 120 ohms resistors should have no issues related to signal reflection.
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Mike Copioli
CTRE Hardware Engineer
http://www.ctr-electronics.com
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