FANUC 18iMB ALARM 041

[shazam/TPP]

i posted this program us the mpmaster post, i've run it on a fadal no problem. this time we put it on our hardinge/bridgeport with the fanuc 18iMB control and receive alarm 041 (INTERFERENCE IN CRC /NRC). i'm cutting a .375 dia in three places with circle mill, rough then finish. the "I" is off by .0001 in two of the locations causing the error. can anything be done about this? here is the code:

 

T5 M06 ( 9/64 CARBIDE BALL E-MILL)

G00 G17 G54 G90 G94 S3500 M03

G00 X-1.39 Y-.8025

G43 H5 Z1. M08

Z.1

G01 Z-.088 F30.

Y-.7489 F3.

G41 D5 X-1.328 Y-.6416

G03 X-1.39 Y-.625 I-.0619 J-.1073 (off by .0001

X-1.39 Y-.625 I0. J-.1775

X-1.4519 Y-.6416 I0. J-.1239

G01 G40 X-1.39 Y-.7489

Y-.8025

Y-.7439

G41 D5 X-1.3255 Y-.6323

G03 X-1.39 Y-.615 I-.0644 J-.1116 (off by .0001

X-1.39 Y-.615 I0. J-.1875

X-1.4544 Y-.6323 I0. J-.1289

G01 G40 X-1.39 Y-.7439

Y-.8025

G00 Z.1

X1.39

G01 Z-.088 F30.

Y-.7489 F3.

G41 D5 X1.4519 Y-.6416

G03 X1.39 Y-.625 I-.062 J-.1073 (correct

X1.39 Y-.625 I0. J-.1775

X1.328 Y-.6416 I0. J-.1239

G01 G40 X1.39 Y-.7489

Y-.8025

Y-.7439

G41 D5 X1.4544 Y-.6323

G03 X1.39 Y-.615 I-.0645 J-.1116 (correct

X1.39 Y-.615 I0. J-.1875

X1.3255 Y-.6323 I0. J-.1289

G01 G40 X1.39 Y-.7439

Y-.8025

G00 Z.1

X0. Y1.605

G01 Z-.088 F30.

Y1.6586 F3.

G41 D5 X.062 Y1.7659

G03 X0. Y1.7825 I-.0619 J-.1073 (off by .0001

X0. Y1.7825 I0. J-.1775

X-.0619 Y1.7659 I0. J-.1239

G01 G40 X0. Y1.6586

Y1.605

Y1.6636

G41 D5 X.0645 Y1.7752

G03 X0. Y1.7925 I-.0644 J-.1116 (off by .0001

X0. Y1.7925 I0. J-.1875

X-.0644 Y1.7752 I0. J-.1289

G01 G40 X0. Y1.6636

Y1.605

G00 Z.1

Z1. M09

 

TIA

[Guest]

041 (INTERFERENCE IN CRC /NRC)

 

Sounds like a Control Comp error

 

Can you try Wear and see if the result is the same?

[shazam/TPP]

when i post it in wear or computer it'll post good. weird it should post fine in control as well.

[Guest]

The control isn't liking that calculation while trying to figure the path in the control.

 

This has always been a sometimes issue with control comp

[shazam/TPP]

thanks JP, is their a parameter in the fanuc control that might allow it to work?

[Guest]

thanks JP, is their a parameter in the fanuc control that might allow it to work?

 

That I don't know.

 

I remember even back in the day when hand coding, this could pop up as an issue, so my suspicion is no but you'd have to check with Fanuc I think.

 

Of course my other suggestion is move away from control comp and those kinds of issues are gone.

[shazam/TPP]

 

Of course my other suggestion is move away from control comp and those kinds of issues are gone.

 

yeah i know that's been discussed here about the pros and cons, i may have this with my operators they'll measure the tool wrong and .... everyone knows it's the programmers fault , still definitely something to consider.

[gcode]

there should be a parameter setting in the control that defines the max allowable error in arc endpoints,

but I have no idea what parameter number that may be