an analog of linear feed of XY axes
12 Sep 2009 03:40 #818
by Zig
an analog of linear feed of XY axes was created by Zig
Hello knowledgeable Gentlemen,
I have a requirement for a signal which would be representativeo the XY speed of the tool ( not velocity of the two axes) but actual speed of the tip of the tool as it moves across the work platten on my gantry mill.
I can easily plug into step pulse train of the two axes but that will not give me surface speed of the tool.
Is there a way of configuring the hal interface and outputing either a train of pulses whose frequency is the analog of the speed or else a fixed frequency variable duty cycle pulse train whose duty cycle is the analog of surface speed?
I have a requirement for a signal which would be representativeo the XY speed of the tool ( not velocity of the two axes) but actual speed of the tip of the tool as it moves across the work platten on my gantry mill.
I can easily plug into step pulse train of the two axes but that will not give me surface speed of the tool.
Is there a way of configuring the hal interface and outputing either a train of pulses whose frequency is the analog of the speed or else a fixed frequency variable duty cycle pulse train whose duty cycle is the analog of surface speed?
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12 Sep 2009 04:30 #819
by cradek
Replied by cradek on topic Re:an analog of linear feed of XY axes
The motion.current-vel hal pin gives the velocity of the tool tip but it includes the Z component.
You can generate various kinds of signals from this using pwmgen or stepgen in velocity mode.
You can generate various kinds of signals from this using pwmgen or stepgen in velocity mode.
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12 Sep 2009 04:37 #821
by Zig
Replied by Zig on topic Re:an analog of linear feed of XY axes
Cradek,
Thanks for the comment. I intend to use the Z axis direction flag as a gating signal anyway. Z axis component will be blocked out during Z axis moves.
Thanks for the comment. I intend to use the Z axis direction flag as a gating signal anyway. Z axis component will be blocked out during Z axis moves.
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