Pololu driver 36v4 control with PLC


I would like to know if it is possible to control the 36v4 without connecting it to a microcontroller and instead, use a PWM and DIR output from a PLC?



Our stepper motor drivers do not control the speed of the motor with duty-cycle based PWM signals like you might use for brushed DC motor drivers; they are controlled with frequency based STEP signals (i.e. pulses, each pulse corresponds to one step).

Your PLC would need to configure the Pololu High-Power Stepper Motor Driver 36v4 through its SPI interface every time it is powered on before it could control it through the STEP/DIR inputs. Alternatively, you might consider using a Tic 36v4 stepper motor controller which supports several control interfaces (including STEP/DIR inputs) and only needs to be configured once over USB using our free Tic Control Center software .

- Patrick