Re: re:tach's

Mariss,

Thank you for the response. Are you able to move your previously
posted files around?

Re: G210 and G340:
So, the synthetic pulses are not necessarily directly related to the
rate of the input pulse train? At all speeds or just at low speeds?

I guess this makes sense, since you are not trying to increase
resolution, simply allow "high-count machine requirements" to be met
by "lo-count capable controllers" (software or otherwise).

And, at low speeds the stepper motor is best able to deal with
a "rough"(read variable rate) input pulse stream.
The servo just queues 'em up anyway in the "target" register. Did
this with a DanCAM "servo" many years ago...

Or have I completely missed the boat?

Ballendo

>I just created your "Circuits" folder in the
>files section and placed the G320 Block Diagram there.
>Both the G201 and the G320 can use a daughterboard (G901 internal
>name) that turns them into G210s and G340s respectively.
>
>The G901 is a wide-range phased-locked loop (PLL) circuit that
>synthesizes 1, 2, 5 or 10 evenly distributed output pulses for every
>STEP pulse it receives. These are then sent on to the main drive.

>At very low STEP pulse rates, (below 10 PPS) the synthesized pulses
>are output as bursts. The motor still moves without vibration
>because the energy for a full step is spread out temporally in 10
>increments.
>Mariss