B&R Industries Provit 5000 User Manual - page 354
Provit 5000 User’s Manual
353
Chapt
er
8
T
ec
hnic
al
A
p
pendix
Technical Appendix • CAN Bus
The synchronization jump width (SJW) is the factor that determines the range over which the
CPU can be synchronized. The bigger the SJW, the shorter the maximum bus length.
Bit Rate
[kBit/s]
Synchronization Jump Width
(SJW)
Bus Length
[m]
Permitted Oscillator Tolerance
[%]
[%]
500
0
1
2
3
67
56
33
10
0.121
0.242
0.363
0.485
250
0
1
2
3
215
192
147
101
0.121
0.242
0.363
0.485
125
0
1
2
3
510
465
374
283
0.121
0.242
0.363
0.485
100
0
1
2
3
658
601
488
374
0.121
0.242
0.363
0.485
50
0
1
2
3
1397
1)
1284
1056
829
1) Conforming to CiA (CAN in Automation), the maximum bus length should be 1000 m
0.121
0.242
0.363
0.485
20
0
1
2
3
3613
3329
2761
2193
0.121
0.242
0.363
0.485
10
0
1
2
3
7306
6738
5602
4456
0.121
0.242
0.363
0.485
Table 204: CAN Bus length