G98 Problem

[rmtucker]

I can not get the following code to work at all with G98.
It works ok with G99 and Rapids from hole to hole at the R3.0 plane.
It drills the first hole as required but every hole after that feeds from the initial plane of Z50 instead of Rapid down to R plane of R3.0
Also tried G98 on same line as G81 with the same results.
Using development version of Uccnc V1.2111 with a UC100 Controller.

Code: Select all

N10 ( PRODUCED 21 AUG 19)
N12 ( CYCLE TIME = 1.028 MINS APPROX )
N14 ( TOTAL NO OF TOOLS = 1 )
N16 ( TOOL 1 = DRILL - 5MM)     
N18 G17 G90 G40 G80 G64
N20 G0 G53 Z-10. M09
N22 T1 M6 (****** DRILL - 5MM ******)
N24 G0 G54 X50. Y0. S5090 M3
N26 G43 H1
N28 G0 Z50.
N30 Z50.
N31 G98
N32 G81 Z-5. R3. F100
N34 X25. Y43.301
N36 X-25. Y43.301
N38 X-50. Y0.
N40 X-25. Y-43.301
N42 X25. Y-43.301
N44 G80
N46 G0 Z50.
N48 M5
N50 G0 G53 Z-10. M9
N52 G0 G53 X10. Y-10.
N54 M30


[Dan911]

There was a discussion about this a while back, with a search you should find. Problem is retract is not model, so for a canned cycle you need to adjust PP to add the retract for each hole.
Example below...

Code: Select all

N30 Z50.
N31 G98
N32 G81 Z-5. R3. F100
N34 X25. Y43.301
N36  R3 X-25. Y43.301
N38  R3 X-50. Y0.
N40  R3 X-25. Y-43.301
N42  R3 X25. Y-43.301
N44 G80
N46 G0 Z50.



[rmtucker]

There was a discussion about this a while back, with a search you should find. Problem is retract is not model, so for a canned cycle you need to adjust PP to add the retract for each hole.
Example below...

Code: Select all

N30 Z50.
N31 G98
N32 G81 Z-5. R3. F100
N34 X25. Y43.301
N36  R3 X-25. Y43.301
N38  R3 X-50. Y0.
N40  R3 X-25. Y-43.301
N42  R3 X25. Y-43.301
N44 G80
N46 G0 Z50.


Yeah i read the threads but find it hard to believe that it has not been fixed since 2017.
At least you have given me a workaround but that code is nothing like i have ever seen on 40 years of working on Cnc machines.
The R word should be Modal???
My Alphacam post for Uccnc is going to be a whole lot different to the Norm.

[Dan911]

It's a 1-2 line modification in Alphacam PP, don't remember offhand. If needed LMK, it doesn't have any affect with Mach3 also. It hasn't been any other complaints about it since 2017 so possibly now cncdrive will take another look.

[cncdrive]

Yes, we will check it out, but will need some time.