KEB COMBIVERT G6 - 10 Annex; CAN-Bit-Timing

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Annex
10. Annex
10.1 CAN-Bit-Timing
RegardingtheadjustedbittimingtheKEBCANcontroladheretothespecicationsoftheCiA
standard.Thenominalbittimingisasfollows:
Areaforeachsegment:Bittime=8Tqto25Tq
Bit Time
SYNC (1 Tq) TSEG1 (4…16 Tq) TSEG2 (2…8 Tq)
Samplepoint
Synchronization step width (SJW) = 1…4 Tq
ValuesfromTSEG1andTSEG2:TSEG1>TSEG2>SJW
Foralladjustablebaudratesapplies:
t
q
= Base time unit. All segments of the Bit-Timing result in a multiple of this time
unit.
SYNC = Only the edges from recessive to dominant are used for the synchronization.
SJW = Synchronization step width (only for information)
Baud rate Timequantum(t
q
) TSEG1 TSEG2 SJW
10 Kbit/s 6.25μs 16 Tq 8 Tq 4
20 Kbit/s 3.125μs 10 Tq 5 Tq 2
25 Kbit/s 2.5μs 10 Tq 5 Tq 2
50 Kbit/s 1.25μs Tq 10 5 Tq 2
100 Kbit/s 625 ns 10 Tq 5 Tq 2
125 Kbit/s 500 ns 10 Tq 5 Tq 2
250 Kbit/s 250 ns 10 Tq 5 Tq 2
500 Kbit/s 125 ns 10 Tq 5 Tq 2
800 Kbit/s 78.125 ns 6 Tq 3 Tq 2
1000 Kbit/s 62.5 ns 5 Tq 2 Tq 1
The grey highlighted transmission rates in the table are to be considered as particularly criti-
cal with regard to the line length.