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Can't G01 under MDI - Sinumerik 820T

andrewmawson

Hot Rolled
Joined
Jan 9, 2003
Location
UK
I'm bringing an old Beaver CNC lathe back to life after a few idle years.

I wanted to make a little MDI diddy program to move X & Z around doing tool changes at the extremes of the programs movement. Works fine using G00 motion commands, but under G01 it sits there displaying the correct 'distance to go' and never moves. The screen displays the correct feed rate that I've given in the command.

M01 Z500.00 F0.15 (LF) hangs

but

M00 Z500.00 (LF) does what it should

It's as though 'feed hold' was asserted, but I can monitor the feed hold buttons (on and off) using the controller diagnostics and they work fine.

. . . so what am I overlooking - it's got to be something simple ?
 
Yes that was my thought, and I issued a G97 which I thought would get me to normal feed mode cancelling constant surface speed as I can't run the spindle yet as the field coil driver is blown

Looks like that should have been a G94 - time to experiment after supper :)

Thanks chaps
 
Thanks chaps - it's moving under G94 as I type - hopefully the replacement spindle motor field coil driver will arrive tomorrow and I can do some proper testing !

Sometime you can't see the wood for the trees

again thanks !
 








 
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