Hi, Art

Hears 4 pic's of my good computer with simulated, 1, 10, 99 and 999 num slots.

Chip

Hi Chip.


Thx, you and rich have pretty good numbers,

your 99 slots seems to miss one slot per rev, and 999 seems to lose about 10.. thats interesting, we'll see how real world
conditions do. I still have one computer reading weirdly so whatever I find may reflect soem weakness somewhere, but you
two are fine fer now.

 Thx for the tests, preciate the results.

Art

I have noticed what appear to be rounding errors in Mach on the cutter comp routines. If that is related, it may be a place to look. I've had problems like this as programs age and I am continuously modifying them. Usually it (if I ever find it) the problem is old variables without enough precision that never got updated.

Specifically, in Mach I get a distinct perpendicular axis shift at the tangent of two arcs when I used an cutter comp offset of .008 but changing to .009 eliminated the shift.

FWIW


BTW, is there any tought of adding a continuous rotation capability for servo motors?

Hii:

 Brian has redone cutter comp for futre versions. It shouldnt round though, but arc intersections can get complex in calculation, and some variance can be expected depending
on the acuteness of the angles involved. If all works out , Im willing to add capability to the new Spindle control routines, but at the moment, Im focused only on threading.

Thx
Art

Hi Guys:

  This is a threading slotted wheel Scoping test. Im looking for Ground effects or floating times. Id love ot see any captures you do on
this one. Just get your spindle going, and launch the scope, select # of samples and hit sample.

 If TIMING is disabled, it assumes input from Encoder#4 , otherwise a single slot input on TIMING input.

 My kernal is 25us per int on the photo's test, and I see a max 25us or so swing in time, this indicates a very flat and good responce to a very
good and stable input. Id like to see yours.

You need to install the enclosed driver and plugin to use this..

Thx
Art

ART,
Do you need version .027 for this test or will it work with 024?
RICH

I think this test will work with any version, but the RPM detected will not be passed to MAch3 unless .027 version is installed. The Scope and such will work though in any version as long as this driver is loaded.

Art

ART,
The scope is not working for version 024 that i am using ?
With or without the sys file and fooling with the settings.
RICH

Rich:

 Weird.. Does th eplugin show any slot times being seen? This scope only works on Encoder #4, or TIMING input.. If theres a TIMING input there it shoudl show up in the scope as well as in the plugins dialog as SLotTime
changing as the slots come in. If "LastSlotTime" is changing, then the Scope should work fine.. any version..

Art

Rich:

  Here's another plugin, it reports each CPU and if it is set to throttle or not, you have to select a CPU number before it will report. If you have only 1 cpu they will all report the same. Does anyone report a throttling? All you need is the plugin for this test..

Thx
Art