TU600-x
Short Guide TU600-x v0.2, January 2020, ©Trackunit 2020
9
CAN bus termination resistor
When installing the TU600 on a J1939 CAN-bus, it is very important to determine if the
installation is on a “private” CAN-bus directly to the CAN controller, or if the TU600 is to be
installed as a stub on a CAN-bus with multiple CAN devices already attached.
Default setup without 120-ohm bus termination.
The 120-ohm termination resister is a software-controlled resistor, so make sure to use and
select the correct TU600 CAN-bus profile.
CAN-bus profile is selected in Trackunit Manager and software controls the resistor setup.
With 120-ohm bus termination (directly connected)
Without 120-ohm bus termination (stub connected)
NB!
When the unit is stub connected, the wire length must be minimized to avoid CAN-bus noise and
error ratio.