[Will_0000]

Trying to program a rotation G68 - Meldas M3 Control

G90
G17
........
........
G0 x0.0 Z25.0 S1600 M13
Z5.0 G43 H20
M98H1000
G68 X0 Y0 R-60.0
M98H1000
G68 X0 Y0 R-120
M98H1000
........
........
M30

N1000
........
........
M99

Involves rotating 6 times at 60 degrees.
The control gives me a P260 Alarm -

A coordinate rotation command was issued though it is out of specifications.
Remedy - Check the specifications.

Any help would be excellent.

Regards

Will

[underdog]

Hey I saw you had no replies so I thought I'd try and help.
Got out my Fanuc 15M book and what you have written for G68 looks good, but you did not have a G54 or the like there, so.....the machine may be in machine coordinate system, so..... if you are starting from the edge of the machine coordinate system (X0 Y0) and then rotating -60, doesn't that put the coordinate system outside the envelope of the machine's reach?

Just a thought - because the code looks good. Let us know what you find.

[fordav11]

the machine may not have the G68 option?

[Will_0000]

Hi

Many thanks for your suggestions.

Just relooked at what I posted before and it should of read

G90
G17
........
........
G0 G55 x0.0 y25.0 S1600 M13
Z5.0 G43 H20
M98H1000
G68 X0 Y0 R-60.0
M98H1000
G68 X0 Y0 R-120
M98H1000
........
........
M30

N1000
........
........
M99

So it should be within its envelope.

The machine not having the option may a possibility. It used to have it but an engineer came to service it and ended up wiping the control! Most of the parameters were stored but we did have to re-enter quite a few. Would an option be sored in the control or would it have to be reactivated?

Many thanks

Will

[fordav11]

On Fanuc from 15 series onwards (or maybe 16 series onwards) usually the options are in the parameters that are punched out. for Meldas I don't know. If you have things that you once could do but now can't do then likely your options are not there. they are just parameters, but undocumented and top secret and by default set to off/disabled to force people to pay dollars for them.

[sinha_nsit]

Just a thought (not very sure): Try G68 with R0. If it still does not work, this option is not there.
Somebody may PM you.