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Messages - joeaverage

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571
Mach4 General Discussion / Re: Probe calibration error
« on: August 07, 2022, 08:36:50 PM »
Hi,
a lot of people encounter a problem with Mach probing routines because of one issue.

The developers of Mach liberally use g31 moves to move the probe tip around prior to actually probing the workpiece. In essence a g31 is like a g1 move,
but one that stops part way through the move if a probe event occurs. If no probe event occurs then the move will complete at its terminal position, just
like a g1 move. Thus if you want to shift the probe tip from probing the corner of a workpiece it perfectly acceptable to use a g31 to move it......but note
that you are not expecting that the probe tip actually contact anything, this is just a preparatory move. It means also that IF a probe event occurs then there
has been a programming error, this move is a preparatory move and is not SUPPOSED to tag anything along the way. If it does at least the machine will stop
rather than carry on and break the probe.

The ESS default behaviour when a g31 is executed is to record a 'probe failure' if the g31 move concludes at its terminal point WITHOUT encountering a probe event.
When using Mach4 probing routines that have made use of g31 preparatory moves then you can change the default behaviour by a setting on the ESS Probing tab
thereby avoiding the 'probe failure' warning.

Craig

572
Hi,

Quote
The testing with using the on screen jog buttons to verify that the DROs and machine moved in the correct direction convinced me that Mach4 was driving the machine correctly in this case. Sometimes people get confused when one axis moves the cutter and the other axis moves the table. I wonder if that could be the source of the problem.

That has been my experience also. I do not favour using jog buttons to make calibration and/or direction tests either. You can assign a button to jog in either direction whereas a
g0 move is the positive x direction should cause the DRO to increment upwards and the axis advance such that the X ordinate increases, no question about how the jog buttons have been assigned.

Craig

573
Hi,

Quote
The Gcode itself has been supposedly been validated on his older setup with a PMDX-411.

That is the point, the code works with the old setup but not with the new control setup, ie the new control setup has one axis reversed by comparison
to the old setup. Its far from impossible that the old setup had the Y axis contrary to the industrial standard but if the Gcode for that machine had be written
in consonance with that setup it would work.

The simple expedient is to change the direction of the Y axis alone in the new set up and try running the code. If the code work then OP has to decide whether
he wishes to retain the non-standard setup OR change the Gcode to suit the industrial standard OR use a g51 when using old code.

Craig

574
Hi,
Mach does not nor cannot change the direction. It means that you have code written for one machine but your new controller has one axis reversed. Change the direction
in the ESS Prot&Pins tab.

Craig

575
Hi,
I bought a very similar Allen Bradley servo some years ago and ended up buying the software from Rockwell. The CD cost $200NZD, about $120USD.

Craig

576
General Mach Discussion / Re: CNC work with robot arm?
« on: August 07, 2022, 04:31:39 PM »
Hi,

Quote
Is it possible to do CNC work such as cutting out parts on plywood sheets with a robot arm?

Yes, very much so but Mach does not have kinematics and so cannot be used for robotic arms.

Craig

577
General Mach Discussion / Re: Should we re-install Mach 4
« on: August 06, 2022, 05:12:10 PM »
Hi,

Quote
Do you happen to know why Mach 4would change the code like that?

Mach does not change the Gcode. What is happenig is that you have code written for your old machine/controller and according to
your system is going the right way. Now you have a different controller and one axis is reversed relative to your old controller.

Quote
It homes and jogs properly but the Y is mirrored during an actual job run.

Forget jogging, it is not a reasonable test, a button can be assigned to jog positively or negatively when you are actually concerned with the
DROs, do they count up or count down?. The correct means of testing your machine for things like axis calibration and axis direction is with MDI.

With the machine approximately centered zero X and Y axes. Then MDI
g0 x100  (mm units assumed) and the axis should move such that the controlled point is 100mm further to the right.
g0y100 should cause the controlled point to move 100mm further away from you. These are the industry standard axis directions, called right hand
after the right hand rule.

It sounds to me like you have your Y axis reversed. It can be direction swapped in the ESS plugin Ports&Pins tab, and should only ever be swapped there.

Craig

578
General Mach Discussion / Re: Mach3/4 and Powermax11 stepper
« on: August 04, 2022, 11:19:37 PM »
Hi,
if you are building a new control system then you'd best go to Mach4. All development on Mach3 ceased seven years ago.

In the early days of hobby CNC a parallel port output was common despite its speed and reliability issues, and you could persue that option
if you wish. It would require Mach3, a 32bit desktop PC with Windows 7 or XP SP3, and a parallel printer port, which are becoming rare.

A better bet is to get an external motion controller like an Ethernet SmoothStepper ($190USD) or a UC300 ($160USD), a breakout board
or two and then you can use any PC you want including laptops, 32 or 64 bit, and up to Windows 11.

Would you post some pictures of the steppers and other hardware? Are you in Aussie? If so Homann Designs in Melbourne is pretty much
a one stop shop.

Craig

579
General Mach Discussion / Re: GCode not working properly in Mach3
« on: August 04, 2022, 05:57:34 PM »
Hi,
the most likely fault is the Arc Mode setting.

Mach3 is natively in Incremental  Arc Mode and that will display normally. If however the machine is set to Absolute Arc Mode then huge arcs appear.

Craig

580
General Mach Discussion / Re: NC Code vs TAP
« on: August 04, 2022, 04:57:21 PM »
Hi,
I used MasterCAMX4, I think, but that was nearly eight-ten years ago. At that time the business in which I worked and held the license were running 64bit Windows 7 PCs.
I believe the X4 was the last MasterCAM version that would run on 32bit machines.

Whether X5 can run on Win11, I just don't know. If you have a genuine license then ask MasterCAM....if you don't then best go silent....they do not take kindly to license violations.

Craig

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