Messages

2721

Mach4 General Discussion / Re: hold all axis also on jog

« on: April 01, 2019, 07:46:14 PM »

Hi,
kool, I don't recall seeing them before. I can't find them in the API.chm input signal listing?

Craig

2722

Mach4 General Discussion / Re: hold all axis also on jog

« on: April 01, 2019, 07:37:04 PM »

Hi Smurph,
very smooth.

I take it that raising ISIG_MOTION_INHIBIT causes the core to stop producing movement?

Craig

2723

General Mach Discussion / Re: Mirror probing

« on: April 01, 2019, 07:15:54 PM »

Hi,
but Don has told us that the barrel is not round, or at least perfectly so.

https://www.machsupport.com/forum/index.php?topic=39769.msg266789#msg266789

Craig

2724

Mach4 General Discussion / Re: hold all axis also on jog

« on: April 01, 2019, 07:06:33 PM »

Hi,

when i disable the axis i think i will get the output enable "0" then servo driver will turn too "bb" insted of "run"
this very bad

Exactly.....this is why I suggested that you reduce the Rapid Rate Override, the Feed Rate Override and the axis Jog Rates
all to zero, it means that the servos are all still enabled but Gcode, MDI and Jogging causes no motion, or at least they do
cause motion but at zero speed. This still allows the servos to respond to movement instructions from the core to
home the machine.

If you don't like that idea or it wont work with your installation because of other stuff you have hooked up
then you will have to devise some other way.

Craig

2725

Mach4 General Discussion / Re: hold all axis also on jog

« on: April 01, 2019, 06:49:45 PM »

Hi,

is that i use external potenziometr to control both G0 G1
i think there will be conflict between that 2 commands

I suspect that is the case, the rate overrides are looking to the potentiometer, even if you set them at zero
the potentiometer resets it to some minimum value almost immediately.

You can disable each axis with:

Code: [Select]

LUA Syntax:
rc = mc.mcAxisEnable(
                     number mInst,
                     number axisId,
                     number enabled);

Description:
Enable or disable the specified axis.

Parameters: Parameter Description
mInst The controller instance.
axisId The axis ID.
enabled Send true to enable or false to disable axis.


However I suspect that this would also prevent you from homing your machine, in fact I thin this would permanently
disable your machine. I'm reluctant to suggest you try it.

If your machine is not homed......then disable all axes
try to home your machine......can't home because axes are disabled
try to enable axes.......works for a little bit but THEN
if your machine is not homed......then disable all axes

IE you have created a loop which disables your axes continuously, not recommended.

Craig

2726

General Mach Discussion / Re: Mirror probing

« on: April 01, 2019, 06:32:54 PM »

Hi,
this is an example of a cheap probe:

https://www.ebay.com/itm/Econo-Probe-3D-Digitizing-Probe-Touch-Probe-Mach3-CNC-Router-MIll-Tormach/254148224305?hash=item3b2c6a2531:g:GlEAAOSw~8JcQ0h2

A second hand (looks to be in great order) Reinshaw:

https://www.ebay.com/itm/RENISHAW-MIP-MANUAL-INDEXING-PROBE-HEAD-STYLI-ACCESSORIES/302900075114?hash=item4686405a6a:g:19EAAOSwD-dbrHpH:sc:USPSPriorityFlatRateBox!97203!US!-1
Craig

2727

Mach4 General Discussion / Re: Mach4 Lua for Dummies

« on: April 01, 2019, 06:15:11 PM »

Hi,
the Signal Script and Signal Library table were always the intended means of detecting inputs in Mach4.
It is not straight forward at first, but it is elegant.

Craig

2728

Mach4 General Discussion / Re: hold all axis also on jog

« on: April 01, 2019, 06:12:18 PM »

Hi,

but in the Jog its not give 0 its give 20% even we put 0

It works fine on my machine.

Craig

2729

General Mach Discussion / Re: Mirror probing

« on: April 01, 2019, 06:08:21 PM »

Hi,
the problem occurs at the flanks of the barrel where the surface is vertical, you lose precision, badly if
probing vertically. If you had an omnidirectional probe yes that would work, but as you know they cost a bomb.

Craig

2730

General Mach Discussion / Re: Mirror probing

« on: April 01, 2019, 05:35:19 PM »

Hi MN300,

There are other potential problems with the 3 probe method too

Yes you are correct. I have some ideas about how the 'translation' would occur. I think in terms of Lua and have
some success in manipulating probe data files to achieve a specific goal. It is none-the-less a programming
problem, ie it costs nothing but time and effort.

I'm just wondering how it is you propose to mount a rifle (4 or 5 or 6 feet long?) and rotate it? Its not
a regular shape and would also require a big machine, may be bigger, even much bigger than Don has got.

Craig