Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: RodC on October 29, 2014, 05:22:10 PM
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I am converting mill that has a MN400 driver board to a parallel board. Everything seems to be working great, however, I had to set the motors step signals to Active Low. The board specifies Active Low.
The board I'm using is a DM8010
http://microkinetics.com/pdfmanuals/DM8010.pdf
From the manual:
Step input signal ............................................... TTL compatible positive edge trigger
And:
Step - used to step the motor. The stepping frequency range is from 0 to 300
KHz. The driver updates the motor position after a LO-to-HI transition
occurs. The minimum pulse width (LO level) should be 2uS
Should I worry or try to correct this. TIA
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What happens when you set it Active High (ie remove green tick) ?
Hood
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Easy way to find out. Set an output pin to the same pin as one of your step pulses is on and then with your hand on the motor, execute a few activateSignal(OUTPUT?), deactivateSignal(OUTPUT?) commands in the script editor. You'll feel which one causes the motor to step.
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If I set it to Active High the motors will not turn. You can feel a very small pulse when the direction changes, but no movement.