topic Re: [GENERIC POST] OSAI (POST LIBRARY) in HSM Post Processor Forum

[GENERIC POST] OSAI (POST LIBRARY)

hawk_ — Thu, 10 Oct 2019 20:28:11 GMT

I noticed that generic OSAI post that are installed with HSM generate wrong IJK onCircular moves (same problem with post from online library). Making small research I noticed what lines are responsible for generate thats moves.

In OASI post

    switch (getCircularPlane()) {
    case PLANE_XY:
      writeBlock(gPlaneModal.format(17));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), iOutput.format(cx), jOutput.format(cy), feedOutput.format(feed));
      break;
    case PLANE_ZX:
      writeBlock(gPlaneModal.format(18));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), iOutput.format(cx), jOutput.format(cz), feedOutput.format(feed));
      break;
    case PLANE_YZ:
      writeBlock(gPlaneModal.format(19));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), iOutput.format(cy), jOutput.format(cz), feedOutput.format(feed));
      break;
    default:
      linearize(tolerance);

In Haas post (that g-code structure of both control unit are more or less similar)

    switch (getCircularPlane()) {
    case PLANE_XY:
      writeBlock(gPlaneModal.format(17), gFeedModeModal.format(94), gMotionModal.format(clockwise ? 2 : 3), iOutput.format(cx - start.x, 0), jOutput.format(cy - start.y, 0), getFeed(feed));
      break;
    case PLANE_ZX:
      writeBlock(gPlaneModal.format(18), gFeedModeModal.format(94), gMotionModal.format(clockwise ? 2 : 3), iOutput.format(cx - start.x, 0), kOutput.format(cz - start.z, 0), getFeed(feed));
      break;
    case PLANE_YZ:
      writeBlock(gPlaneModal.format(19), gFeedModeModal.format(94), gMotionModal.format(clockwise ? 2 : 3), jOutput.format(cy - start.y, 0), kOutput.format(cz - start.z, 0), getFeed(feed));
      break;
    default:
      linearize(tolerance);
    }

Haas post are correct and the circular moves IJK are OK.

Main differences are with i/j/kOutput.format

OSAI -> (cx)

HAAS -> (cx - start.x, 0)

If I tried to change the code to be similar like in HAAS, OSAI post crash. Maybe someone know the solution?

Changing post to generate code using R parameter works fine, nevertheless I would like to fix problem with IJK moves.

Re: [GENERIC POST] OSAI (POST LIBRARY)

andrea.amilo — Fri, 11 Oct 2019 09:47:47 GMT

Hi @hawk_ ,

I think you could configure Osai arc as in Haas postprocessor :

function onCircular(clockwise, cx, cy, cz, x, y, z, feed) {
  if (pendingRadiusCompensation >= 0) {
    error(localize("Radius compensation cannot be activated/deactivated for a circular move."));
    return;
  }

  var start = getCurrentPosition();

  if (isFullCircle()) {
    if (properties.useRadius || isHelical()) { // radius mode does not support full arcs
      linearize(tolerance);
      return;
    }
    switch (getCircularPlane()) {
    case PLANE_XY:
      writeBlock(gPlaneModal.format(17));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), iOutput.format(cx - start.x), jOutput.format(cy - start.y), feedOutput.format(feed));
      break;
    case PLANE_ZX:
      writeBlock(gPlaneModal.format(18));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), iOutput.format(cx - start.x), jOutput.format(cz - start.z), feedOutput.format(feed));
      break;
    case PLANE_YZ:
      writeBlock(gPlaneModal.format(19));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), iOutput.format(cy - start.y), jOutput.format(cz - start.z), feedOutput.format(feed));
      break;
    default:
      linearize(tolerance);
    }
  } else if (!properties.useRadius) {
    switch (getCircularPlane()) {
    case PLANE_XY:
      writeBlock(gPlaneModal.format(17));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), xOutput.format(x), yOutput.format(y), zOutput.format(z), iOutput.format(cx - start.x), jOutput.format(cy - start.y), feedOutput.format(feed));
      break;
    case PLANE_ZX:
      writeBlock(gPlaneModal.format(18));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), xOutput.format(x), yOutput.format(y), zOutput.format(z), iOutput.format(cx - start.x), jOutput.format(cz - start.z), feedOutput.format(feed));
      break;
    case PLANE_YZ:
      writeBlock(gPlaneModal.format(19));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), xOutput.format(x), yOutput.format(y), zOutput.format(z), iOutput.format(cy - start.y), jOutput.format(cz - start.z), feedOutput.format(feed));
      break;
    default:
      // see G16
      linearize(tolerance);
    }
  } else { // use radius mode
    var r = getCircularRadius();
    if (toDeg(getCircularSweep()) > (180 + 1e-9)) {
      r = -r; // allow up to <360 deg arcs
    }
    switch (getCircularPlane()) {
    case PLANE_XY:
      writeBlock(gPlaneModal.format(17));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), xOutput.format(x), yOutput.format(y), zOutput.format(z), "R" + rFormat.format(r), feedOutput.format(feed));
      break;
    case PLANE_ZX:
      writeBlock(gPlaneModal.format(18));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), xOutput.format(x), yOutput.format(y), zOutput.format(z), "R" + rFormat.format(r), feedOutput.format(feed));
      break;
    case PLANE_YZ:
      writeBlock(gPlaneModal.format(19));
      writeBlock(gAbsIncModal.format(90), gMotionModal.format(clockwise ? 2 : 3), xOutput.format(x), yOutput.format(y), zOutput.format(z), "R" + rFormat.format(r), feedOutput.format(feed));
      break;
    default:
      // see G16
      linearize(tolerance);
    }
  }
}

Please test it carefully and let me know if it works.

Re: [GENERIC POST] OSAI (POST LIBRARY)

hawk_ — Fri, 11 Oct 2019 19:10:04 GMT

@andrea.amilo I checked and now values are OK, but still there is an problem with proper parameter i/j/k usage.

There is:

N24 G19
N25 G03 Y-128. Z-52.187 I10. J0.

Should be (like in haas)

N70 G19 G3 Y-128. Z-52.187 J10. K0.

This problem touch all move with interpolation on plane G18/G19. Moves on G17 are OK.

I Changing i/j/kOutput for proper one (because in OSAI post there is only I and J output even for CZ moves) and that crash postprocessor. To solve it it`s nesesery to add at the beginning:

// circular output
var iOutput = createVariable({prefix:"I", force:true}, xyzFormat);
var jOutput = createVariable({prefix:"J", force:true}, xyzFormat);
var kOutput = createVariable({prefix:"K", force:true}, xyzFormat);

So far the postprocessor has been working fine, but I will still do an additional test.

Re: [GENERIC POST] OSAI (POST LIBRARY)

andrea.amilo — Mon, 14 Oct 2019 05:52:52 GMT

Hi @hawk_ ,

you can configure your Osai postprocessor to have only arcs in G17 plane (IJ).

You have to set :

allowedCircularPlanes = 1 ; // allow circular motion in G17 plane

at the top of the file ( line 34 ).

Please let me know if it works.

Re: [GENERIC POST] OSAI (POST LIBRARY)

hawk_ — Thu, 17 Oct 2019 06:54:05 GMT

My version of OSAI control dont have any problems with interpolating on different G-planes.