I've been having problems when running a program, putting it into single block near the end of a contour, it has taken off. It did it with mach 2, now I'm running mach 3 v1.9.081.
Heres the program:

O0001(11-18)
 
(T1 =  .25 ENDMILL 2FL H1 , D1 )
 
N1
T1 M06 ( TOOL - 1  .25 ENDMILL 2FL   )
M01 (PUT T1 IN SPINDLE)
M08 G04 P1000
G54 G0 G90 X0. Y0. S6000 M03
(WATCH OFFSET ON OFF)
G43 H1 Z.1
G1 Z-.1 F8.
G41 D1 X-.011 Y-.0064
X.0127 Y-.0475
G3 X.19 Y0. I.0823 J.0475
X-.19 I-.19 J0.
X.19 I.19 J0.
X.0127 Y.0475 I-.095 J0.
G1 X-.011 Y.0064
G40 X0. Y0.
Z-.2
G41 D1 X-.011 Y-.0064
X.0127 Y-.0475
G3 X.19 Y0. I.0823 J.0475
X-.19 I-.19 J0.
X.19 I.19 J0. X.0127 Y.0475 I-.095 J0. **
G1 X-.011 Y.0064
G40 X0. Y0.
G0 Z.1 M09
M05
M30

It took off in the line ending with **
I had run it twice in single block mode and it worked fine. When I cut metal, it took off, see picture. After that happened, I was unable to recreate the problem.
What can be happening here? I've scrapped several parts by this happening. It's always an arc at the end of a contour when in single block. I like to put it into single block at the end of a contour when running for the first time to make sure of the retract, etc.

The program is at faul try it like this.

O0001(11-18)
 
(T1 =  .25 ENDMILL 2FL H1 , D1 )
 
N1
T1 M06 ( TOOL - 1  .25 ENDMILL 2FL   )
M01 (PUT T1 IN SPINDLE)
M08 G04 P1000
G54 G0 G90 X0. Y0. S6000 M03
(WATCH OFFSET ON OFF)
G43 H1 Z.1
G1 Z-.1 F8.
G41 D1 X-.011 Y-.0064
X.0127 Y-.0475
G3 X.19 Y0. I.0823 J.0475
X-.19 I-.19 J0.
X.19 I.19 J0.
X.0127 Y.0475 I-.095 J0.
G1 X-.011 Y.0064
G40 X0. Y0.
Z-.2
G41 D1 X-.011 Y-.0064
X.0127 Y-.0475
G3 X.19 Y0. I.0823 J.0475
X-.19 I-.19 J0.
       X.19 I.19 J0.
       X.0127 Y.0475 I-.095 J0. ** should be 2 lines
G1 X-.011 Y.0064
G40 X0. Y0.
G0 Z.1 M09
M05
M30

Graham.

There was a bug with single block and it was fixed in the 2.00 Rev

Please update

Thanks

 
Cool! Will update today

I updated and have a couple of questions.
First my coolant no longer works. The LED comes on but the solenoid won't fire. The only time coolant comes on is if I press RESET. Next, why did it reset my hotkey settings?
Finally I can't press single block when in cycle as I like to when near the end of a cut to check retract etc. Is that the way it should work

 
Confused
Mark

For the single block bit, try hitting feedhold then single block, that might work. I never use single block and dont have it on my screenset so cant say for sure.
Hood

Hi Mark,
   No, that is not how it should work. While code is running, I place in single block. It does stop at the end of the line I hit it on. But it jumps to the next line. On cycle start again the two lines are now a single move. If z is moving, I hit single block, it stops at end of line. Next line of code is a move in the x. I hit start, now the z and x are moving at the same time. This should not happen. Single block should simply pause the running at the end of a line of code. When you hit start again it should start back running as if single block was never hit. I think we gots bugs. This is a problem.

I simply cannot put it in single block while in cycle. I get a "No singlestep in G41/G42 program" error. If I hit feed hold, I get the same error if I try then too.
At least before, I could get single block. Occasionally it would take off though, see first post

So, it is saying no single block option while in cutter comp.? I wish I knew, I don't use cutter comp. My cam package puts the cutter where it needs to be based on tool diam.

Mine does the same. I just use cutter comp to adjust size. I have my cam system to default to comp on.