RE: [CAD_CAM_EDM_DRO] Parallel Port Pins

Brad,

Most current stepper drives and the step and direction servo drives
watch the pulse pin to know when to drive the next step. On the drive
end it is often labeled pulse, step, or clock. Not sure what you are
planning to do, but if you are making your own drive you want it to
increment the motor one step increment based upon the value you have in
the software in the direction indicated by the direction bit.

Tim
[Denver, CO]
Sherline products at Deep Discount
Mach1 & DeskCNC with credit card ordering
www.KTMarketing.com/Sherline

> -----Original Message-----
> Hi,
>
> I'm still a little confused with the output from a
> parallel port (KCam, but I'm sure others are the same),
> looking at one axis, I see the three pins Pulse, Direction
> and Enable, Direction is pretty obvious on or off indicating
> forward or reverse, I assume the enable indicates that the
> motor is to be activated, but what information does the pulse
> give me, is it simply counting the pulses while the enable
> bit is set, or is there some form of bit conversion to give
> me a number, either way how do I know the pulse width etc.
>
> Can anyone point me in the direction of somewhere to
> explain this, I have searched the internet without any
> success in finding an explanation.
>
>
> Thanks in advance.
>
> Brad
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html