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PCAN-Optoadapter – User Manual
3.2
Signal Delay
The PCAN-Optoadapter has a transit time delay of approx. 80 ns.
This corresponds to a cable length of 16 m. Therefore, you should
consider the dependence of the maximum length of a CAN bus on
the bit rate at the installation of the PCAN-Optoadapter. The
following table shows the maximum possible CAN bus length at
different bit rates:
Bit rate
1 Mbit/s
500 kbit/s
250 kbit/s
125 kbit/s
50 kbit/s
20 kbit/s
10 kbit/s
5 kbit/s
The listed values have been calculated on the basis of an idealized
system and can differ from reality.
3.3
Status LED
The status LED on the top of the adapter indicates, whether it is
correct supplied. In this case, the LED is continuously green.
Bus length
40 m
110 m
240 m
500 m
1.3 km
3.3 km
6.6 km
13.0 km
Bus length with PCAN-Optoadapter
24 m
94 m
224 m
484 m
For small bit rates, the delay of the
adapter can be neglected
9
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