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Messages - joeaverage

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6091
General Mach Discussion / Re: Work coordinates
« on: November 02, 2017, 06:02:19 AM »
Hi,
just writing numbers into a DRO or a work offset  does not cause an axis to move.

Quote
I try to run a cutting file the Z axis does not move to the set position.
This won't happen... the Z axis will not magically move it has to be jogged or MDIed or under Gcode control.

Craig

6092
General Mach Discussion / Re: Work coordinates
« on: November 02, 2017, 05:44:27 AM »
Hi,

Quote
the Z axis does not move to where I set it
How are you setting it? Just typing in a number may change the DRO but it wont shift an axis. You must
jog or MDI or execute Gcode to shift an axis.

Quote
Plus I noticed when cutting a flat file (not rotary)it doesn't cut the same orientation as it looks on Vectrics
Then one of your axes is in the wrong direction relative to your CAM program.

6093
General Mach Discussion / Re: Motor Output Pins won`t change
« on: November 02, 2017, 05:12:19 AM »
Hi,
sometimes you need to re-start Mach to cause it to re-read a profile and sometimes you need to re-start you PC for  Machs Parallel Port Driver
to read new values and act on them.

Craig

6094
General Mach Discussion / Re: Work coordinates
« on: November 02, 2017, 04:42:45 AM »
Hi,
good work with the posting.

I see that you have referenced (homed) the machine, that is good. So what exactly is the problem?

I see for instance that the current work offsets are being applied but they may no longer be relevant to the job on the table at the moment or may be
left over from your last session.

Lets imagine that you've just turned Mach on, referenced and now you want to load a piece of material and cut it. When you place the material in the vice
it will almost certainly not align with the previous work offsets from the last job.

What you do is manually jog to the corner of the material (or wherever on the material that the Gcode 0,0,0 is drafted for) and hit <zero X> and <zero Y>.
Now manually and carefully jog downwards until the tool just touches the surface of the material and hit <zero Z>. The work co-ords of the point are 0,0,0.
The machine co-ords will be different, in fact they will be negative of the difference between the machine zero (your reference or home point) and the
'beginning' point of your Gcode job. Mach cares about machine co-ords but you don't. If you want to see them that's fine but I find they're a source of confusion.

The real value of referencing your machine is now Soft Limits (on Config/Homing-Limits page) make sense. You can have them drawn on the toolpath
display (Config/Toolpath.....check <Machine Boundaries>) and see whether your Gcode job is within the boundaries. If not  shift the material so that you
think it is within bounds, jog to the new 0,0,0 point as before, hit <zero X>,<zero Y> and <zero Z> and <Regen Toolpath> and you can now confirm that you
shifted the material enough and in the right direction to bring it within bounds.

This is a very simple procedure, no need to do any calculations or manually enter numbers into DROs just jog to the 'origin' of your part and zero your axes.
What actually happens is the work offsets get updated to negative the difference between your new intended work 0,0,0 and the machine zero (home point).
Easy really...but it takes a little practice before the simplicity and elegance of it become plain.

Craig

6095
General Mach Discussion / Re: Is it possible to auto square the Y axis?
« on: November 02, 2017, 03:20:02 AM »
Hi,
what motion controller are you using?

I don't have a gantry so I could be out t lunch here...I believe the motion controller has to temporarily break the master/slave connection between the two
motors and home them individually. It requires active participation of the motion controller to do it.

I know, and have read a good part of a thread called Auto Squaring on the Warp9 forum, of course it relates to their USS and ESS products.

Craig

6096
Mach4 General Discussion / Re: Mach 4 with ESS locks up on Cycle Start
« on: November 02, 2017, 02:15:57 AM »
Hi,
whats wrong with creating your own profile using one of the standard screen sets, they have one advantage over others....they work. I'm happy with wx4.set

The ESS plugin set up does a lot of the donkey work, much of Machs setup is actually done at the same time as you setup the ESS.

Craig

6097
General Mach Discussion / Re: Work coordinates
« on: November 02, 2017, 02:09:24 AM »
Hi,
<Additional Options> is on the same page as you create the text for a post.

 Email is fine but that means I see it and no one else does, I don't need the help...others do and so I wish you to post it so they can benefit too.

Craig

6098
Hi,
you're still guilty of trying to get everything to go at once. Stop it, you are just confusing yourself and going backwards.

Quite frankly the ESS is a step forwards, I understand that you don't understand and therefore wish to do without it but its still a step backwards.

For the moment lets work on what you've got, one parallel port. Have you run DriverTest.exe? Do so and report the results, it will often say 'Excellent' but that's
laughably insufficient, post the numbers, particularly the timing jitter or post a screen shot.

Now you need to set up an Estop. You should have one, in many countries a machine that does not have a working Estop is considered dangerous and illegal in a
work place. Get a cheap and cheerful Estop switch and wire it up.

Now wire up the motors, one at a time and tune them. I noticed on you motor tuning pages the Z axis looked very weird. Have a close look at it an set it
appropriately.

Now you are ready to wire homes and limits or just homes. I would recommend three home switches and three inputs. So simple. If you don't have home
switches when you crash your machine and break something this will echo in your brain 'I f....ing told you so!' If you've got decent home switches wired and can
reference your machine so that soft limits are effective you can get by without limit switches.

Have you downloaded the Configuration and Setup manual? Your not ready yet to hook up the plasma but when you are thinking about it read chapter 4.6.

Craig

6099
General Mach Discussion / Re: Work coordinates
« on: November 01, 2017, 11:33:23 PM »
Hi,
take the screen shots.

post to this thread but go to <Additional Options> to the left of the text window browse to your screen pics
folder and attach the files. You can attach up to four files per post but try and keep the individual files a modest
size, less than 300kB if poss.

Craig

6100
General Mach Discussion / Re: Work coordinates
« on: November 01, 2017, 10:27:13 PM »
Hi,
it is common for the Z axis machine zero to be at the top of its travel. If you were observing
machine co-ords then any Z co-ordinate within the machining volume would be negative.

It is unusual to have the machine co-ords displayed in the DROs, it is the norm to have work co-ordinates
displayed where zero is the surface of the material, positive Z above the material (safe) and negative Z
means below the surface, that is machining and producing chips if all is well, or a crash if you haven't got it
right.

If you look on the diagnostics page you will see how the current position is calculated from the machine co-ords and the
current work offsets.

There is a button that causes the machine co-ords to be displayed in the DROs, hitting the button and the DROs go back
to the current position which is the 'normal' condition.

The green border around the <zero (axis)> button means that axis is referenced.

Craig

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