Need Help!- Can I get a G96? Lathe with Fanuc 0T

[Fest911]

Hello all, I have an issue that's been bugging me with my postform.l, and I would be grateful for any help. I spend more time in the mill package and only use the lathe about 15% of the time, so maybe there's something really simple I am overlooking? I post to a Fanuc 0T (on a Clausing Storm CNC200A lathe), and I can't get G96 output for CSS.

G[FeedType] outputs the correct G98 or G99
G[SpeedType] always outputs G97. I've tried everything I can think of, and I can't get a G96.

Here are sections of my postform.l:

Spindle 3 4 5 # Cw, ccw & stop m codes
Coolant 8 9 7 # On, Off & Mist m codes
SpeedType G 96 97 # CSS and RPM g codes
FeedType G 99 98 # IPR & IPM g codes
Dcomp 41 42 40 # Left, Right & Cancel m codes

---------------

StartCode
%0
O[Program#]
G20 G40 G00 M05
G28 U0.0 W0.0
G50 S[MaxRPM] M09
End

1stToolChange
G28 U0.0 W0.0
T[Tool] t[Lcomp]
G[FeedType] G[SpeedType] S[Speed] M[Direct]
G00 X[V] Z[H]

[ToyMaker94566]

Ya know, I noticed that about my post too but didn't really care since I too use the lathe post so little. But I figured out if you use inches per minute instead of inches per rev when programming, you get the G96. Some where in the post the codes are reversed....

[Al_The_Man]

You also need an encoder on the spindle shaft, as well as the option par..
I have sent you a PM.
Al.

[Fest911]

Originally Posted by ToyMaker94566 Ya know, I noticed that about my post too but didn't really care since I too use the lathe post so little. But I figured out if you use inches per minute instead of inches per rev when programming, you get the G96. Some where in the post the codes are reversed....

Thanks for the reply.
I did think of that, and I tried two things that didn't solve the issue:
1: I tried two identical operations, one with IPM and one with IPR.
2: I tried swapping the SpeedType G 96 97 to SpeedType G 97 96, and it still outputs G97.

[ToyMaker94566]

Edit: I just tried posting to a Fanuc using both the "RPM" and "CSS" and I get G96 and G97 respectively. They are reversed but I do get both. Inches per rev or per minute made no dif.

[ToyMaker94566]

Ok, now that you made me look, I tweaked my post and now get G96 with "CSS" and G97 with "RPM".... I swapped the text in "SpeedType G 96 97" to "SpeedType G 97 96"

Spindle 3 4 5 # Cw, ccw & stop m codes
Coolant 8 9 7 # On, Off & Mist m codes
SpeedType G 97 96 # CSS and RPM g codes
FeedType G 99 98 # IPR & IPM g codes
Dcomp 41 42 40 # Left, Right & Cancel m codes


Thanks for bringing it up.

[Fest911]

Originally Posted by ToyMaker94566 Ok, now that you made me look, I tweaked my post and now get G96 with "CSS" and G97 with "RPM".... I swapped the text in "SpeedType G 96 97" to "SpeedType G 97 96" Spindle 3 4 5 # Cw, ccw & stop m codes Coolant 8 9 7 # On, Off & Mist m codes SpeedType G 97 96 # CSS and RPM g codes FeedType G 99 98 # IPR & IPM g codes Dcomp 41 42 40 # Left, Right & Cancel m codes Thanks for bringing it up.

ToyMaker, I'm glad it fixed your post
When I swap those definitions in my post, it seems to only use the first digit such that:
SpeedType G 97 96, outputs G97 for both CSS and RPM.
SpeedType G 96 97, outputs G96 for both CSS and RPM.

Any chance you'd be willing to share a copy of your post, and maybe a SURFCAM file that works correctly on your setup? This might go a long way toward troubleshooting my lack of G96.

[ToyMaker94566]

Originally Posted by Fest911 ToyMaker, I'm glad it fixed your post When I swap those definitions in my post, it seems to only use the first digit such that: SpeedType G 97 96, outputs G97 for both CSS and RPM. SpeedType G 96 97, outputs G96 for both CSS and RPM. Any chance you'd be willing to share a copy of your post, and maybe a SURFCAM file that works correctly on your setup? This might go a long way toward troubleshooting my lack of G96.

I was posting in Win7-64 -Surfcam V5.1 using the standard "Lathe -Fanuc" post, nuttin special. What version are you using?

[Fest911]

Originally Posted by Al_The_Man You also need an encoder on the spindle shaft, as well as the option par.. I have sent you a PM. Al.

Just to verify: my lathe does have CSS capability and it works just fine when I hand write the code.

I am pretty sure my issue is with SURFCAM, and its post processor (see my response to ToyMaker below regarding swapping G96 and G97 in my postform.l)

[Fest911]

Originally Posted by ToyMaker94566 I was posting in Win7-64 -Surfcam V5.1 using the standard "Lathe -Fanuc" post, nuttin special. What version are you using?

Right now I'm on Velocity 3.0 Build 357, BUT I am in the process of bringing maintenance current so I can use V5.2 in my new Win7 x64 (A Dell M6600 that actually just got delivered today!). So, maybe within the next couple of weeks my issues will just go away when the new hardware is running the updated software?

On the other hand, what I have right now should work... I wish I could just let it go

[ToyMaker94566]

I understand but here's a heads up. If you're off maintenance with velocity and go back on, you lose Velocity. The new version of Surfcam does not include Velocity, it is now a $1600 option....

I don't know why you're having post issues but I skipped Velocity 3 when I got back on maintenance.