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PCAN-Optoadapter – User Manual
3
Operation
Note: A configuration of the PCAN-Optoadapter is not needed.
You can use it instantly.
3.1
Signal Delay
The PCAN-Optoadapter has a transit time delay of 145 ns. This
corresponds to a cable length of 29 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.
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
11 m
81 m
211 m
471 m
For small bit rates,
the delay of the
adapter can be
neglected
8
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