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Author Topic: How to chnage parameters for HOME position on LEFT sides of X Axis.?  (Read 2248 times)

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Hi,

In my chinese CNC router I make modernization for adding 4 Axis.
I  have problem of HOME position after  instalation new Mach3.
My HOME position is on the LEFT side of X Axis and after istalation Mach 3 all G-code looks like on the picture.
For me that mean: first istalation Mach 3 is  for  HOME position on RIGHT side of X axis.
Is any Expert of Mach3 who can explain How/where I must to change positon of HOME in Mach 3 for LEFT sides.?
but without changing direction in Motor Home/Soft limits etc, because it could make other problems.

After making position on the table and fixed 0,0,0. all values of XYZ are in + values, but should to be - values, if my Home position is on the LEFT of X Axis..
and the square G code should to be inside Machine Boundaries.

.... or mabe I make some other mistakes during instalation.

Offline TPS

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Re: How to chnage parameters for HOME position on LEFT sides of X Axis.?
« Reply #1 on: March 05, 2021, 10:28:11 AM »
Show us your G-Code file.
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: How to chnage parameters for HOME position on LEFT sides of X Axis.?
« Reply #2 on: March 05, 2021, 01:10:48 PM »
It isnt problem with G code,
I opened in other laptop with Mach3 and looks correct, but for my CNC Router I must to use PC with LPT only. Laptops dosnt have connect by LPT.


N100G00G21G17G90G40G49G80
N110G71G91.1
N120T1M06
N130 (End Mill {3 mm})
N140G00G43Z15.000H1
N150S12000M03
N160
N170()
N180G94
N190X0.000Y0.000F2000.0
N200G00X-23.500Y-23.500Z10.000
N210G1X-23.500Y-23.500Z-1.000F500.0
N220G1X23.500Y-23.500Z-1.000F2000.0
N230G1X23.500Y23.500Z-1.000
N240G1X-23.500Y23.500Z-1.000
N250G1X-23.500Y-23.500Z-1.000
N260G00X-23.500Y-23.500Z10.000
N270G00Z15.000
N280G00X0.000Y0.000
N290M09
N300M30
%
« Last Edit: March 05, 2021, 01:21:45 PM by Relaxis »

Offline ZASto

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Re: How to chnage parameters for HOME position on LEFT sides of X Axis.?
« Reply #3 on: March 05, 2021, 02:45:43 PM »
Do you have the same .xml file on your laptop as you have on work computer?
Make no mistake between my personality and my attitude.
My personality is who I am.
My attitude depends on who you are.

Offline TPS

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Re: How to chnage parameters for HOME position on LEFT sides of X Axis.?
« Reply #4 on: March 06, 2021, 02:00:09 AM »
your g-code is so that X0/Y0 is in Center of part.

on a normal Installation
x-movement (millbit related to part) moving from left to right is positive
y-movement (millbit related to part) moving from front to back is positive
 
related to your g-code workpiece X0/Y0 must be somewhere in the Center of table not at the border.
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: How to chnage parameters for HOME position on LEFT sides of X Axis.?
« Reply #5 on: March 06, 2021, 04:52:32 AM »
My instalation Mac3 is absolutely normal.
but I have X and Y inversely than you wrote,  XY  buttons of MPG MODE  work  reversed and vertical and horizontal lines are  engraving  inversly too.
Z is correct.

Maybe  I should to change cables of A+- in drives of X and Y at first.?

By the way, my chinese machine have had secial istalation of Plugin for panel and mainboard and other separetely file Mach3Mill for changing in program Mach3.
Maybe that is reasone of my problem and I must to change some cables.
What are yuo thinking about such solution....

Offline TPS

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Re: How to chnage parameters for HOME position on LEFT sides of X Axis.?
« Reply #6 on: March 06, 2021, 04:57:14 AM »
Config -> Ports&Pins -> Motor Ouputs -Change DirLowActive should also invert direction without swapping wires
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: How to chnage parameters for HOME position on LEFT sides of X Axis.?
« Reply #7 on: March 06, 2021, 06:09:29 AM »
I know about such option, but if you change DirLA X and Y you changing direction for HOME and XYZ going in oposite.
of course XY  buttons of MPG MODE  working correct now.

... and still is problem with position of my G-code like on picture...
I didnt have had such problem before I changing minebord and instaling new Mach 3

And now values  of the - and +  in the Work Offsets are the opposite.

Offline TPS

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Re: How to chnage parameters for HOME position on LEFT sides of X Axis.?
« Reply #8 on: March 06, 2021, 08:55:53 AM »
I know about such option, but if you change DirLA X and Y you changing direction for HOME and XYZ going in oposite.
of course XY  buttons of MPG MODE  working correct now.

Config -> Homing Softlimits -> Home Neg.
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.

Offline TPS

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Re: How to chnage parameters for HOME position on LEFT sides of X Axis.?
« Reply #9 on: March 06, 2021, 09:15:26 AM »
... and still is problem with position of my G-code like on picture...
I didnt have had such problem before I changing minebord and instaling new Mach 3
jog your machine somewhere in the middle press Zero X , Zero Y and Regen Toolpath


according to your screenshot X-Dro = 126.something and Y-Dro is 52.something
Center of your code is X0/Y0 and coordinates are from -23 to +23 so the toolpath view
is axactly showing the reality.
« Last Edit: March 06, 2021, 09:19:08 AM by TPS »
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.