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Question #: 2270

Question: I'm connecting my PCI-e parallel expansion card to my 5 axis parallel port breakout board. However, the 3.3 volts coming out is not triggering servo step. I can measure hi/lo coming out of the parallel port when using Mach 3. Is the low voltage likely the issue or should I look elsewhere?

Current Solution

In the mach 3 software there is a setting that can be check to allow either a high or low to trigger you motor. In Mach 3 Config/Ports&Pins/MotorOutputs/StepLowA will enable the motor with a low Voltage.

Adjust the motor outputs to there corresponding step pin/direction pin(if setup is following our diagram):
Step Dirt
x 2 3
y 4 5
z 6 7


Other Possible Solutions to this Question