[j206]

Hi to you all, been doing a few components on the mill lately which would have benefited from the G68 Rotation command but I am having problems with it. I keep getting an alarm stating ROTATION FORMAT ERROR.

The program is below, the control is a Yasnac which I believe is very similar to Fanuc if not identical. I believe the Yasnac needs the Q2 on the G68 line, I might be wrong but I have to use Q2 with G52 Datum shift and if I don't use Q2 with G64, I get an illegal G code alarm.


10(G68 ROTATION)
N1 M98 P8000 T10 (SAFETY START SUB PROGRAM)
M6 (DIA3MM EM)
M8
G0 G90 G54 X0. Y15. S10000 M3
G43 Z2. H10 D10
M98 P11 (CALL PROFILE SUB PROGRAM)
G68 Q2 X0. Y0. R180.
M98 P11
G68 Q2 X0. Y0. R270.
M98 P11
G68 Q2 X0. Y0. R360.
M98 P11
G69
G00 G90 Z10.
M98 P8000
G53 Y0.
M30

:11(PROFILE)
G0 Z2.
G1 Z-10 F500
G41 X-2.780 D10
Y13.97
G3 X2.780 Y13.970 I2.780 J0.
G1 Y15.
G40 X0.
G00 Z10.
M99
%

Any help appreciated.

Thanks

[dcoupar]

Looks like no Q2 allowed, and you should command G69 before the next G68.

According to the I-80 manual, it looks like the format should be:

G68 Xxxx.xxxx Yyyy.yyyy Raaa.aaa
M98 P11
G69
G68 Xxxx.xxxx Yyyy.yyyy Raaa.aaa
M98 P11
G69
G68 Xxxx.xxxx Yyyy.yyyy Raaa.aaa
M98 P11
G69
...
...
...

[j206]

Thanks dcoupar, I will give that a go when I get back to work tomorrow.

[harshal]

FANUC G68 ROTATE COORDINATE MAIN PROGRAM & SUB PROGRAM EXAMPLE
August 08, 2018 - FANUC G68 ROTATE COORDINATE SYSTEM [M]



MAIN PROGRAM

N10 G54 X0 Y0 ;
N20 M06 T05 ;
N30 G43 H5 ;
N40 M03 S1500 ;
N50 M08 ;
N60 G98 F300 ;
M98 P034321 ; sub program call
N70 G00 Z100 ;
N80 M05 M09 M30 ;

SUB PROGRAM

O4321
N10 G91 G68 X10 Y10 R22.5 ;
N20 G90 X30 Y10 Z5 ;
N30 G01 Z-5 ;
N40 X47 ;
N50 G00 Z5 ;
N60 M17 ;

DESCRIPTION OF PROGRAM
Main program
N10- Work co-ordinate system command ( Offset point) , where X0 and Y0
N20- Tool change command , select tool no 5
N30- Tool height offset compensation H5(we set tool height of z axis )
N40- Spindle on clockwise at speed 1500 rpm
N50- Coolant on
N60- Feed rate per minute F300
M98- Sub program call , P03- no same operation repeat ,4321- no. of sub program.
N70- Rapid command , where Z100 [ tool up ]
N80- Spindle off , coolant off , main program end
Sub program
N10- Incremental co-ordinate command , rotate coordinate system command where X10 , Y10 and angle of rotation R22.5
N20- Absolute co-ordinate command , X axis distance count from 0 to starting position ,Y at same place 10 and tool is 5 mm up.
N30- linear interpolation command , cutting depth is 5
N40- Operation end position 47 along X

my link is
http://www.hdknowledge.com/2018/08/f...m-example.html