Yeah - I did some digging and that whole "L" word in a fixed cycle dates back to the original NIST RS-274D-NGC.
IMHO - Its a dinosaur that should have died out. I consider it an accident waiting to be activated by the user. One of the most powerful reasons to switch to LCNC is the faster processing power and virtually unlimited program length. We have O-loops and plenty of other tools to make good G-code without using commands that are not so apparent in the actual actions they will execute. I assume since it was all ready supported in the early source code it has been kept as legacy support. I dare say most modern machine controls do not support this without additional verbose codes. We are not running from punched tape anymore, there is no longer a need to optimize each line of code. (My tapes are in Aluminum or steel 35mm film cans stored away as novelty items I can drag out to brag about the bad old days...) As is, I try not to use fixed cycles in incremental (G91) mode if possible. There can be enough confusion with the G98|G99 "R" and initial points in Inc mode without other issues. Negative "R" values are something to use with caution. Greg ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121054471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
