Re: TkBackplot 1.0.1

["Ian Wright" <Ian-at-iw63.freeserve.co.uk>]

Ray,

Further to my previous message, I have just run the program again and got
the same error - it was 'Axis 0 following error'.
The error also occurred when I tried running an engraving file produced by
Millwrite - part way through the cutter path simply headed off for the top
right hand corner of the screen at high speed. As it happens with files made
in different programs - I have not tried four different files, I assume the
problem is in EMC - especially so as I got the same effect by just running
it in EMC itself.

Ian
--
Ian W. Wright
Sheffield  UK

>Hi Ray,

I have been playing with backplot and have found a problem which I don't
understand. Since it may point to a problem within the program, it may be
worth you looking at and commenting on. I tried to run the attached file
which is G-code produced from a .dxf file using Flashcut and it all seemed
to run OK until it hit the line which I have commented. At this point it
gave an error message which was, I think, 'zero following error' or
'following error line zero' ( I can't remember exactly and I'm not near the
linux machine at the moment). At the same time, all the axes began to
increment rapidly and I couldn't find a way to stop them. 'Abort' seemed to
do nothing and 'Estop' whilst producing a message to say that it had been
implemented, didn't stop the counters incrementing. Presumably, if this
happened on a real machine, the cutting head would simply hurtle off until
it wrapped itself around an end pillar or ground itself into the machine bed
and the operator would not be able to stop it doing so. The effect is the
same whether I use the original version of Backplot or the new one with 3d
(which is very impressive).
There could, of course, be some problem with the file - I have no experience
yet of using g-code and I'm just trying to get a feel for it, but it is the
inability to stop things happening that worries me. Thanks.