Signal Delay; Status Led - Peak 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 Bus length
1 Mbit/s 40 m
500 kbit/s 110 m
250 kbit/s 240 m
125 kbit/s 500 m
50 kbit/s 1.3 km
20 kbit/s 3.3 km
10 kbit/s 6.6 km
5 kbit/s 13.0 km
The listed values have been calculated on the basis of an idealized system and can
differ from reality.

3.3 Status LED

The LED on the top of the PCAN-Optoadapter indicates, whether it is correctly
supplied. In this case, the LED is continuously green.
3 Operation PCAN-Optoadapter
User Manual 4.1.0 © 2023 PEAK-System Technik GmbH
Bus length with Optoadapter
24 m
94 m
224 m
484 m
For small bit rates,
the delay of the adapter
can be neglected
9