trying to call a subroutine

[hindocarina]

I am trying to set up a program to drill a small hole between each location in a set of coordinates. Below is a sample of how I've set up the subroutine, but the Z comes down, goes up, then fails to continue with the program.

G90 G20
G0 X0.0 Y0.0 Z.1
M98 P1
X0.5 Y0.0
M98 P1
X1.0 Y0.0
M98 P1
M2
O1
G1 F30 Z-.2
G0 Z.1
M99

What am I doing wrong?

Thanks,

Charlie

[Geof]

Is this the actual program or did you retype it. Your ninth line seems to read O1, that is the letter O not zero 0. That could hang things up.

What you are doing should be possible with a drilling canned cycle such as:


G0 X0. Y0. Z.1
G82 X0. Y0. Z-.2 R.1 F30 (Start canned cycle)
X.5 Y0.
X1. Y0.
G80 (Cancel canned cycle)

[hindocarina]

Yes, I meant for that line to read O1. I am just learning, and the Mach 3 manual says "The program must contain an O line with the number given by the P word of the Call." Obviously, I've used it wrong. I want to learn how to call a subroutine, then I'll tackle the canned cycle you mention. This program is just a practice example. Can you show me with code how I would call the subroutine to drill a hole at every location? Thanks,

Charlie

[Geof]

Originally Posted by hindocarina .... Can you show me with code how I would call the subroutine to drill a hole at every location? Thanks, Charlie

Not with the commands Mach uses they are different in some ways to commercial machines. The ones I am familiar with use M97 for a subroutine call while M98 is a subprogram call and the line numbers are preceded by N. On my machines your program would look like this:

N1 G90 G20
G0 X0.0 Y0.0 Z.1
M97 P100
X0.5 Y0.0
M97 P100
X1.0 Y0.0
M97 P100
M30
N100 G1 F30 Z-.2
G0 Z.1
M99

One thing you might try is using P100 and make your call line O100.

Or wait for somebody familiar with Mach.

[hindocarina]

Thanks Geof, I appreciate your answers.

I would have posted on the Mach 3 forum, but I thought my problem was more of a G-code question than a Mach 3 question. I'll try it over there and see what they have to say. Thanks again,

Charlie