Kvaser U100S-X2 User’s Guide
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Figure 6: M12 5-pole CAN connector pinout.
3.5
CAN bus termination
Every CAN bus must be terminated with a 120 Ohm resistor at each end of the
bus. The Kvaser U100S-X2 does not contain any CAN bus termination, because
their inclusion could cause severe disturbance in a system which is already
correctly terminated.
For laboratory or testing use, the exact value of the termination resistors is not
always critical. Sometimes a single terminator is sufficient. For production, proper
termination is essential. If you see error frames on the bus, you should check the
termination.
To save yourself a lot of trouble, always terminate the CAN
bus properly.
3.6
Power supply
The Kvaser U100S-X2 is powered through the USB connector. Make sure the USB
power source can supply enough current (500 mA). If using a USB hub, choose an
externally powered one to be safe.
Kvaser AB, Mölndal, Sweden — www.kvaser.com
