G74 What am I doing wrong??

[Hennessy]

I am running a lynx 200L lathe with a fanuc 21i-t control. I keep getting an invalid decimal point error. I don't know what I am missing, the manual isn't to clear and I don't get what the error code is saying.

(END MILL .5 DIA.)
(TOOL - 5 OFFSET - 5)
G0 T0505
G97 S2000 M03
M8
G0 G54 X0. Z.25
Z.1
G74 R0.1
G74 Z-.4586 Q.1 F.002
G0 Z.25
M9
G28 U0. W0. M05
T0500
M01

I am still new at programing a lathe so any help would be appreciated.

Hennessy

[dcoupar]

Q doesn't accept a decimal point. Try this:

G74 Z-.4586 Q1000 F.002

Also, I don't know if you're aware of the Daewoo/Doosan forum on this site...

[Hennessy]

Originally Posted by dcoupar Q doesn't accept a decimal point. Try this: G74 Z-.4586 Q1000 F.002 Also, I don't know if you're aware of the Daewoo/Doosan forum on this site...

Ah I see... now I get why Parameter 5139 is 1000. So how do I call out a peck depth?

Originally Posted by dcoupar Also, I don't know if you're aware of the Daewoo/Doosan forum on this site...

Ya I posted here because I needed a quick reply. I got thrown in to the fire today. We needed some tooling made for in house use and of course it needs to be done ASAP. So I had 2 choices surface them on the mill which would take 2.5 hours a part, or run them on the lathe at 10 min a part. I also figured this was more just my lack of knowledge on using a code (not machine specific). Thanks for the quick reply it would have taken me forever to figure that one out.

Hennessy

[dcoupar]

Originally Posted by Hennessy Ah I see... now I get why Parameter 5139 is 1000. So how do I call out a peck depth?

Just put a Q value in the G74 block. Parameter 5139 will update. If you don't include a Q in your G74, it will peck by the current value of 5139. I always include the Q as I want to be sure what my peck amount will be.

[cncsam]

You need to change Q.1 to Q1000

Your canned cycle works using trailing zero's and not decimal programming

hope this helps,

sam