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Messages - Tweakie.CNC

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461
General Mach Discussion / Re: Problem reading G31 sytem varibles
« on: August 01, 2021, 10:17:14 AM »
If it helps, this is a typical tool height setting script. The line in red would usually read GetVar(2002) but has been changed to GetOEMDRO(802) to allow for the Chinese controllers that do not recognize #2002.

CurrentFeed = GetOemDRO(818) 'Get the current feedrate to return to later
CurrentAbsInc = GetOemLED(48) 'Get the current G90/G91 state
CurrentGmode = GetOemDRO(819) 'Get the current G0/G1 state

If GetOemLed (825)=0 Then 'Check to see if the probe is already grounded or faulty
DoOEMButton (1010) 'zero the Z axis so the probe move will start from here
Code "G4 P3" ' this delay gives me time to get from computer to hold probe in place
Code "G90 G31Z-1. F4" 'probing move, can set the feed rate here as well as how far to move
While IsMoving() 'wait while it happens
Wend
ZProbePos = GetOEMDro(802)  'get the exact point the probe was hit
Code "G0 Z" &ZProbePos 'go back to that point, always a very small amount of overrun
While IsMoving ()
Wend
Call SetDro (2, 0.766) ' change 0.766 to your plate thickness and then adjust for final accuracy
Sleep 200 'Pause for Dro to update.
Code "G1 Z1. F5" 'put the Z retract height you want here, must be greater than the touch plate thickness
While IsMoving ()
Wend
Code "(Z axis is now zeroed)" 'puts this message in the status bar
Code "F" &CurrentFeed 'Returns to prior feed rate
Else
Code "(Z-Plate is grounded, check connection and try again)" 'this goes in the status bar if applicable
End If
If CurrentAbsInc = 0 Then 'if G91 was in effect before then return to it
Code "G91"
End If
If CurrentGMode = 0 Then 'if G0 was in effect before then return to it
Code "G0"
End If         

462
General Mach Discussion / Re: Setting a DRO after a Reference
« on: July 31, 2021, 11:46:24 AM »
Click:  Operator / Edit Button Script then click on REF ALL HOME button.

Add the line:
SetOEMDRO(800,168.0000)

Then save the script file.



463
With Mach3 changing the spindle speed with the 'S***' command will break the Constant Velocity chain and cause the problem you describe. The only solution is not to use the S*** command or any other command which breaks the CV chain.
You could use a digital encoder, driven by your Z axis, to control laser power or use a digital potentiometer (driven by Step and Direction signals) and set-up as an Axis. Both these methods have been sucessfully used by others in the past to create stunning 8 bit laser images.

Another alternative is to change to Mach4.

Tweakie.

464
General Mach Discussion / Re: Mach3 Kernel Speed Problems
« on: July 31, 2021, 12:31:59 AM »
Do you have a Mach3 license or are you operating in Demo mode ?

465
General Mach Discussion / Re: Problem reading G31 sytem varibles
« on: July 30, 2021, 12:49:32 AM »
OEMDRO(802) is not a system variable in the same sense as #802. It is usually read within a VB routine as GETOEMDRO(802).

Tweakie.

466
General Mach Discussion / Re: Problem reading G31 sytem varibles
« on: July 29, 2021, 02:08:19 PM »
If the value is not stored in VAR(2002) then there is a good chance that it is stored in OEMDRO(802).

Tweakie.

467
General Mach Discussion / Re: Need Help
« on: July 26, 2021, 09:43:35 AM »
The Mach3 manual can be found here;

https://www.machsupport.com/wp-content/uploads/2013/02/Mach3Mill_Install_Config.pdf

Section 5.4 of the manual details the units set-up (or change of units) and what you will have to do.

Tweakie.

468
In Config. / General Config. - Auto Screen Enlarge has to be checked (ticked).
Drag Mach3 screen edges to size reguired then close and restart Mach3.

Tweakie.

469
General Mach Discussion / Re: CNC Connexion problem
« on: July 24, 2021, 03:33:29 AM »
Could you please post a couple of pictures of the inside of your controller box particularly the board with the USB socket.
We may be able to identify the board and perhaps a Mach3 plugin may be available (it is unlikely that a Mach4 plugin exists).

Tweakie.

470
General Mach Discussion / Re: CNC Connexion problem
« on: July 22, 2021, 02:28:03 PM »
You need a suitable Motion Controller (together with it's Mach4 plugin) connected between your Computer and your CNC controller.  https://www.machsupport.com/shop/mach4-hobby/

Tweakie.

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