the board are my build using L297/L298 and have input for STEP/DIR/ENABLE .
the step motor operation is:when a signal occur on step motor pin,enable pin should be activated
to make motor to start and when the signal is lost,enable pin should be low.
i've got no problem for STEP pins adjusment,and either for DIR pin,but for ENABLE pin,it is always high or low and i can not control it when needed.
when i set ENABLE pin to "1" the step motor works with mach3, but when there is no signal at STEP signal pin,the step motor is still active and it sounds like buzzzzzzzzzzzzz!!
how can i use L297/L298 to drive stepper,they have enable pin and i can not control this pin with my software.
best regard