User Manual

TMCM-351 Hardware Manual (V1.06 / 2011-NOV-14) 18

4.3.3 J3: CAN bus termination

The board includes a 120 Ohm resistor for proper bus termination of the CAN interface. When this jumper is

closed, the resistor will be placed between the two differential bus lines CAN_H and CAN_L.

4.3.4 J4 – J12: Encoder input termination

For enhanced reliability differential encoder signals should be terminated properly. The board offers

termination resistors (120 Ohm) for all three encoder interface signals (a/b/n) for all three encoders. By

setting jumpers, these resistors will be placed between the differential encoder signals. Do not set these

jumpers in case encoders with single ended signals are used.

Place jumpers for

proper temrination

Figure 4.12: Encoder input termination

4.3.5 Enable all driver stages permanently

The /Shutdown input pin has to be connected to the supply voltage in order to enable the driver stages for

all three stepper motor axes. A jumper between pin 19 and pin 20 can be used to permanently enable

drivers.

Figure 4.13: Enable all driver stages permanently