Messages

1

Mach4 General Discussion / Re: Backlash not applied during manual JOG?

« on: July 12, 2016, 02:21:50 AM »

to M3 is compering lead to gold.
Ah ....
And Mach3 is the gold I presume? 

Mind you, I can't help feeling that the Mach3 (UCCNC, LinuxCNC) direction is the way of the future. Proprietary HW/SW combos (such as Fanuc) always lose out to 'Open' SW ime. Yes, it may take the 'Open' SW a little while to get there (budgets, budgets), but just look at every supercomputer and every web server out there. And I find those massive (Fanuc-style) front panels quite boggling compared to the simple GUI of the more modern systems.

I am told that if you want to add a new g-code command or a macro facility to one of the older systems, it can cost you thousands. With the PC versions you usally get everything in the first package, with no extras needed.

I'm raving, and diverting the thread. Sorry. To the best of my knowledge, the ESS does not support backlash correction itself. It would be a silly idea to try imho.

Cheers
Roger

I agree with it being the way of the future, now if only some one cough..artsoft...cough,cough would make a specific motion control software package for controlling industrial robots. Used robots are dirt cheap, or scrapped once the proprietary controllers take a crap. being that they are the future, a guy could make quite a few extra bucks retro fitting new controls to them. and yes you could probably do it with mach, but it would be a pain, and no one wants to be programming robots in gcode in 2016.

2

Mach4 General Discussion / Re: Backlash not applied during manual JOG?

« on: July 12, 2016, 01:12:01 AM »

na hes someone who knows more than most phd and all.

you can get differences in travel does a 20 year old haas have the same backlash amount as it was new if not all of the table was used no it wont it will have a wear patch same as any machine

That's not acceptable backlash, that's a slopped out machine that needs to be rebuilt. there is a difference. and excessive wear patch is exactly that, worn out. it needs a new ballscrew and or rails. but apparently you need a phd to know that.

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Mach4 General Discussion / Re: Backlash not applied during manual JOG?

« on: July 12, 2016, 12:12:27 AM »

touche sir, touche

4

Mach4 General Discussion / Re: Re ESS and Mach 4

« on: July 11, 2016, 11:57:36 PM »

sounds like your have an input set to active low, or high incorrectly in either the ESS set up or Mach input config...maybe

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Mach4 General Discussion / Re: Backlash not applied during manual JOG?

« on: July 11, 2016, 11:13:40 PM »

Backlash comp is there to take up 0.0001" to 0.002" of slop in the mechanics, ie leadscrew and nut, ballscrews. bearing preload, belt stretch, motor coupler tolerances. these things do not vary over the course of axis travel, Any mechanical mechanism has to have some varying degree of tolerance, "backlash" if it didn't, it would be welded tight and not move. If you have different amounts of backlash over different portions of axis travel, then you have have different problems, that can only be corrected by replacing the defective component. generally your leadscrew or ballscrew, or worst case scenario, your ways, or linear rails are wore out.

6

Mach4 General Discussion / Re: Backlash not applied during manual JOG?

« on: July 11, 2016, 10:13:59 PM »

huh? Getting the software to work, or setting back lash comp, cause that takes 30 seconds.

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Mach4 General Discussion / Re: Backlash not applied during manual JOG?

« on: July 11, 2016, 10:09:44 PM »

Lol, They're brand new, Installed 5 of them this year already.

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Mach4 General Discussion / Re: Backlash not applied during manual JOG?

« on: July 11, 2016, 08:13:34 PM »

As completely off topic as this thread went, does anyone know if they ever implemented Backlash comp for the ESS??? and as far as properly built machines not needing it, I work on $3 million dollar, Fanuc controlled multi spindle CNC machines for a living...and every single axis has Backlash compensation.

9

Mach4 General Discussion / Re: Mach 4, ESS & G540 Input issues

« on: July 11, 2016, 07:54:11 PM »

The G540 inputs are not looking for a voltage presented on the input terminal.

It has an internal resistor pulled up to 12 VDC, and responds when something
shorts the input to ground on terminal number 12.

Yup Thanks. I feel like a moron. The data sheet threw me for a loop saying "Input Voltage 0-12v" Its amazing how well things work when they're wired up correctly

10

Mach4 General Discussion / Re: Mach 4, ESS & G540 Input issues

« on: May 05, 2016, 02:52:03 PM »

Yeah that was my next stop. I had a purpose built PC made just for a stand alone CNC control. except its running windows 7 pro 64 bit, which doesn't support a parallel port, so a ESS is pretty much my only option.