G code Full circle G41-G42 compensation Problem

[Janislovenia]

Good day to all of you CNC specialists out there!!

I really need your help on this one...

Let s say i want to machine a full circle of diamater 100mm (about 4inches)
But i want to use compensation G41 With The tool of diameter 20mm (in the cnc controller tool list)
The program looks something like this (bobcad Postprocessed)

N23 G90 G54 X25.4 Y0. S1008 M03
N24 D01 Z2.54
N25 G41
N26 G01 Z-12.7F123
N27 X50.8F123
N28 G17 G03 X50.8 Y0. I-50.8 J0.F123
N29 G01 X25.4F123
N30 G00 Z2.54
N31 G40
N32 M30

The problem is how do i make the machine go full circle (the machine does not go 360 degrees it goes smthng like 330) when using compensation ? is there a G code that needs to be aded or something or do i have to manualy extend the circle to go another quarter of the circle over the end point (thats how my little mind got rid of that problem for now)

And if anyone has any knowledge on the siemens 810M Ga3 (or just 810M)
CNC controller maybe if you have a g-code program that works fine..I would be really appriciative if you helped me maybe even send me a g-code program so i can have a reference...
I only have the manual and the cnc controller that is on the machine didnt have one single program in it....

So PLease i really need your hellp

[jeffrey001]

You need to have a lead in move with the G41

G41 X and Y

Jeff

[Kiwi]

Try
N23 G90 G54 X25.4 Y0. S1008 M03
N24 D01 Z2.54
N26 G01 Z-12.7F123
N27 G41 G01 X50.8
N28 G17 G03 X50.8 Y0. I-50.8 J0.
N29 G40 G01 X25.4
N30 G00 Z2.54
N32 M30

[Janislovenia]

I think i got it now ,i should use the circullar lead in ...I will try this and post the results.... Thank you for now

[jeffrey001]

Also, D word should be associated with the G41

Z compensation is G43 Z2.54

Jeff

[Kiwi]

Also, D word should be associated with the G41
Z compensation is G43 Z2.54...

Please post your full version of the code.

[br1]

You could use this :
%
G00 G54 G17 G90
M06 T1
N24 G00 X25.4 Y0. S1008 M03
N25 G43 H01 Z2.54 M08
N26 G01 Z-12.7 F123
N27 G41 D01 X50.8 F123
N28 G03 X50.8 Y0. I-50.8 J0. F123
N29 G01 X25.4 F123
N30 G00 Z2.54
N32 G40
N31 M30
%