Missing F

[Chris Flint Two Ft Pty Ltd]

When ever I use Highfeed on posting I get a problem in that the output Gcode has a missing F value on the first sequence line of each XYZ moves and I have to edit it in.

Any ideas?

[Guest]

go itno your control def >> nc output >> enable post debug info >> repost the file and look for the move and verify what section of the post it is in, then go into the post, to the section and add the feed.

 

Hopefully it's that easy

 

Remember to backup your post before making any changes

[Allan Brown]

In X, I'm seeing that some older posts had logic to avoid neg feedrates (fr = -2 used to mean rapid, fr = -1 used to mean unchanged). So you might have seen if fr > 0, fr

 

I've seen fr$ = -1 values after a rapid move in X. No problems if you post uses fr_pos$ for its feed value, which most newer posts do. Bad news if your post uses fr$ for the feed calc. That means that nothing would be output after the rapid, resulting in a missing first feed.

 

Sound about right? Search for fr$ in your post and see if any logic is tied to it.

[Chris Flint Two Ft Pty Ltd]

Thanks to all, i have sorted this out by removing th create arcs in anything except XY.

Bob Hill also taught me how to unlock the highfeed so alls well that ends well and the cuzzie has got his job all looking good.

regards

chris f