Cable lengths, stub and drop lines

Recom­men­ded maxi­mum line lengths for the main line and stub lines
baud rate max. trunk line length max. drop line lenght max. lenght of all drop lines max. drop line lenght at mul­ti­port tap max. lenght of trun­k­li­nes with mul­ti­port tap (wit­hout droplines)
50 kbit/​s 1000 m 50 m 250 m - -
125 kbit/​s 500 m 20 m 100 m 4,8 m 310 m
250 kbit/​s 250 m 10 m 50 m 2,4 m 120 m
500 kbit/​s 100 m 5 m 25 m 1,2 m 66 m
1 Mbit/​s 20 m 1 m 5 m 0,3 m 13 m

The same length rest­ric­tions app­ly in the CAN FD net­work. The infor­ma­ti­on in the table here refers to the arbi­tra­ti­on baud rate.

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Article last edited on Article first published on
2021/​04/​28 2017/​01/​03
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Recom­men­ded bit timing and bus length

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Tra­ning CAN basics

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