User Manual

CANopen Manual for TMCM-1140, TMCM-1160, and TMCM-1180 (Rev. 2.01 / 2017-JUL-26) 41

www.trinamic.com

4.3.1.2.1 Digital Inputs STOP_L, STOP_R, and HOME

The eight pin connector of the TMCM-1160 provides three reference switch digital inputs STOP_L, STOP_R

and HOME. All three inputs accept up to +24 V input signals. They are protected against these higher

voltages using voltage resistor dividers together with limiting diodes against voltages below 0 V (GND)

and above +3.3 V DC.

+3.3V

STOP_L

STOP_R

HOME

microcontroller (all)

and TMC429 (STOP_L, STOP_R)

10k

22k

100nf

GND

GND GND

+5V

Pull-up allways switched on

with CANopen

Figure 4.6 STOP_L, STOP_R and HOME inputs (simplified input circuit)

All three digital inputs are connected to the on-board processor and can be used as general purpose

digital inputs!