JVL MAC050 User Manual page 192

5.6 Expansion Mod. MAC00-FC2/FC4/FC41
5.6.13 Bus termination.
If a module is the last device on the CAN bus the module have a build-in terminator of
120 ohm. The dip switch (SW2) is used to enable termination. When both switches are
on, the termination is enabled. In order to guarantee perfect operation of the CAN bus,
bus terminating resistors must be provide at both ends of the bus cable.
The figure below shows the termination selection:
The factory default settings are OFF on both dip switches, an the line termination are off.
188 JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500