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Hi Arciera,

Hmm, I will take a look when time comes.

Currently working on the look ahead function to calculate optimal trajectory speeds.

The trajectory consists of lines, arc's, helix, clothoids, & splines.
The max speeds depends on the min,max curvature value of the shape.

- For a clothoid we retrieved the clothoid curvature extrema. "kmin, kmax also know as a kappa value." from the library g2solve3arc.curvature_min_max(..)
- For a arc we can calculate the constant curvature "1/radius" as for a line the curvature=0.
- For the 3-degree spline we calculated curvature min,max using the opencascade GeomLProp_CLProps class.

Then using a optimal angular speed, we can calculate the max speeds for the shapes.

We use a forward sweep over the trajectory followed by a backward sweep over the trajectory between
the rapids. Then the vo, ve is calculated given by a max vm of that segment.

Then there might be a problem when one segment is very long and has high curvature value at one spot.
This then will reduce the overall segment speed. How to deal with this?

 

Issue has been solved by following this post: forum.linuxcnc.org/27-driver-boards/3559...ethernet-mesa-boards

danke sehr nett von dir dort habe ich vor 6 monaten angefragt mir wurde nur gesagt es gibt nur mehr die 7i76Eu und sie wissen nicht bis wann

vor 3 monaten dass selbe.
und mein händler der dir 7i76 e verkauft hat ist gerade in urlaub er weis auch nicht wann die neuen kommen da MESA nichts raus gibt aus den USA

Resets the Z value of the active coordinate system.
Before getting #<zworkoffset>, you must reset the Z value of the active coordinate system.

The drives use an analog signal from the control. I was also able to find datasheets and the software to tune these drives online.

Ok Amazon you really failed me . I searched on there site with BTS7960 as the search query and
literally got NOTHING.
Thank you tommylight. I used your URL and Amazon went straight to it. On a side note that other
SSR I ordered works great with PWMing and has a heat sink and fan port . So now the machine
is back in bussiness. Now I can get back to getting the 7i96 to do PWM on a general output.

I am having an issue with connecting my 7i96s over ethernet to my laptop. I have powered up the card and plugged it in over ethernet. I have then tried to ping it, but it is unable to receive any data. Do I need to flash the mesa card first? If so how do I do this? When plugging in over ethernet the laptop shows that something is plugged in, bu it can't seem to connect.

Thanks for any help or advice

I wrote it poorly.

The value of “110” is indicated by <zworkoffset>.
This value is -120.

When I changed it to this it worked fine.
I don't know what the results would be if there was an offset.

In the [DISPLAY] section you need use 'PROGRAM_PREFIX':
linuxcnc.org/docs/html/config/ini-config...#sub:ini:sec:display

Most important question is what motor drives does the machine use (ie for axis motors and for the spindle). If the current drives accept either analog or step/dir signal then they are usually fine for a refit. If they use some kind of serial interface then things get difficult.

In other words, when G92/G52 = 0 and G54, the value of <zworkoffset> is "0", right?

That is correct.

The value is around "110", so I think that's the cause.

this would indicate that #5063 (which should hold the Z coordinate value at the time the probe tripped) has the value 'around 110'.

Typing this command in MDI should show the current value of parameter 5063:


linuxcnc.org/docs/html/gcode/overview.ht...:numbered-parameters

Portugal
www.eusurplus.com
Deutchland
www.welectron.com/
Beide haben Mesa karte.

I still don't know the cause, but I think I'm getting a little closer to the answer.


What value does <zworkoffset> represent?

qt_auto_probe_tool.ngc

When calculating using <touch_result>, the results will be more accurate if you omit <zworkoffset>.

qt_auto_probe_tool.ngc
In other words, when G92/G52 = 0 and G54, the value of <zworkoffset> is "0", right?
<zeorkoffset> value is around "110", so I think that's the cause.
I don't know if the "ini" settings are wrong or what the cause is. Do you know anything?

Danke für die infos.

Genau verifizieren kann ich es nicht mehr da ich den adapter schon zurückgegeben habe und ein gebrauchtes mainboard mit 2.6ghz core2 duo mit 4gb ram gekauft habe. Hier liess sich die karte ohne probleme flashen.

Schade nur das nirgends in europa diese mesakarten mehr gehandelt werden. Ich stehe auf jeder Mailingliste doch es kommt nichts nach.

Ich hätte anstelle die 7i76eu gekauft wäre weniger Aufwand gewesen.

Da ich nicht wusste ob die 5i25 funktioniert kaufte ich keine neue hardware. Jetzt soll mal der test laufen dann sehen wir weiter wenn die maschine fertig ist

The dev seems active on the github repo, raise the issue there and be patient and wait for a reply.