Variables and/or Subprograms - OSP5000L

[nlh]

Can someone give me a few pointers on the proper or best way to use 2 different groups of offsets in a program for the same tools?

I have a part that is double ended. I have a fixed stop in the chuck. The program needs to face a certain amount off the first side (also rough O.D. turn, finish O.D. turn, and thread) and then with an M0, turn the part around (against the fixed stop) and repeat the above process, only with a different group of offsets for the tools (Z offsets only).

The only problem is, I'm not sure how to accomplish this with the 5000L control. On other controls I can simply assign another work coordinate (G54, G55, etc) and use a sub to repeat the program. From my little experience with this control, it doesn't use work coordinates, or does it? I have only been using it for a short while so I have no doubt I have overlooked something.

What's the best way to achieve what I need to do without making a very long program (I don't have RS-232 comms so I have to punch it all in by hand!).

Thanks

[cncclimber]

I am fairly new to okuma also, but have done similiar type things using the workshift function. you can write in VZSHZ+(or -).... whatever the difference is between the front and back. using the shift, when it hits the m02 it will automatically reset to zero at the end of the program. I think it is way harder than a fanuc but it works. if you have a book with the machine it explains a little bit. I will check more into this but this should get you started.

[cncclimber]

sorry, you would put in VZSHZ=.... whatever the difference.

that will shift it in the +- direction and you can run the back side, then when it hits m02 it zeroes out. if you need to shift it more than one time it would be;

VZSHZ=VZSHZ+.... the difference again.

ex if the first shift was 2.0"
VZSHZ=VZSHZ+1." (it now equals 3.0")

Or you could just do the math and tell it 3.0. but if you are doing multiple parts and parting off each then moving z0 the above method can run in a sub program. hope this helps. I am sure someone out there may be able to explain better, or have a better idea.

[nlh]

Thanks cncclimber!

That should be very helpful provided my early 5000L control supports this feature. I went over the programming manual last night but didn't come across this feature. I'm sure the book doesn't cover everything though.

Next question, how do I do subprograms with this control? There were some commands in the book for program control (GOTO, IF, THEN, etc) within a program, but the procedure for subs wasn't that clear.

Thanks again,
Nate

[Thawk53]

nlh,
Here is just a quick example of how I use sub programs on Okuma's.

Main Program

G50S750
N10 CALL O01
M1
N20 CALL O02
M1
N30 CALL O03
M30

Sub program

O01
G0G95G97X20.Z20.S500T0101M42M3M8
Cutting Program
G0X20.Z20.M9
RTS
O02
G0G95G97X20.Z20.S500T0202M42M3M8
Cutting Program
G0X20.Z20.M9
RTS
O03
G0G95G97X20.Z20.S500T0303M42M3M8
Cutting Program
G0X20.Z20.M9
RTS


Rick

[nlh]

Thanks Rick,

The book was talking about a command, PSELECT, but I guess in this case I don't need that.

Another quick question, can your example program be done all within one main program, or do you treat the main and sub as 2 different programs (ex. MAIN.MIN, SUB.MIN)?

Nate

[JMCNC87]

I HAVE A PROBLEM IN COMMUNICATION FOR PC FOR MACHINE CONTROL OSP5000 OKUMA LC40Matc-L "
SOMEONE WILL HELP ME ..
Because we do not know if BE SET OF CONTROL, parameters or PC ..
FICO I should ...
Hugs and Stay right

[nlh]

Rick,

What control do you use this format on? I have a green screen 5000L. I tried modifying my existing program to follow the format you have but all I get is an error (no sub program error). I have tried both putting the sub and main program together (in one program body) with no luck as well as splitting them up (2 seperate programs) again with no luck. I need to get this machine going this weekend in order to have parts to my customer by sometime Monday, no later than Tuesday.

What am I doing wrong?

Thanks

[cncclimber]

It is a shot in the dark here, but make sure you have a RTS at the end of your sub programs. I haven't done much with subs but I seem to remember that caused me trouble once.

[cncclimber]

not trying to sound condescending here, but make sure it is a "o"(oh) not a '0'(zero) at the sub program call. otherwise I would think it should work. like I said I am fairly new to the "okuma thing" also. kind of like the blind leading the blind here.

[nlh]

Yes, I have the RTS at the end of the sub. A couple of times I did make a mistake and put a 0 (zero) in place of the O. Guess my question at this point would really be if I have to treat the sub and main as 2 seperate programs entirely. Again, the book isn't very clear on this. There is a place in the manual where it mentions selecting both the main program and sub at the same time when in Auto mode. Tried this but still no luck. I'm sure it's something simple that I'm overlooking. The first time always has the steepest learning curve.

Thanks for all the help

[cncclimber]

I recently used the "schedule program" feature to run a part. because of the 2mb limit in program size I had to break the program into 6 individual ones(lots of surfacing) I used the schedule program and it ran each one in succession. that is where the PSELECT call comes into play. if your machine supports that it is pretty handy, you can run totally different parts in succession "lights out" with a barfeeder and stuff, I guess you could use that if that is all you can make work for now, until you can get the subs figured out. I haven't run subs in a really long time and never on my new machine but I have noticed there is a separate file extension labeled .SUB maybe you need to designate your subs that instead of .MIN . good luck I have to move some furniture now. let me know how it works out, good lesson for me also. Matt.