hal_manualtoolch. Radius to end of arc differs...

Hi,

i have got a problem with the manual tool change. if a tool change command comes up in the g-code programm
a dialog appears "insert tool Nr. xx - continue". i want to move the xyz axis during the tool change, touch z to the surface -
then i want to continue (needed in my machine setup, see below). by the default hal_manualtoolchange this ist not possible (right?)
so i changed the script to the modified version found here:

linuxcnc.org/media/kunena/attachments/17...anualtoolchange2.zip

now i can move xyz as i want, touch of z etc. - but if i press the continue button linuxcnc stops with:

"Radius to end of arc differs from radius to start:
start=(X385.5000,Y81.4919)
center=(X210.0000,Y81.4919)
end=(X122.2500,Y60.0125)r1=175.5000
r2=90.3406 abs_err=85.16 rel_err=48.5239%"

for me as an beginner in linuxcnc, i thougt that the macro should move back the xyz to the original tool change
position, with respect to the new z touch off and continues. for me it looks like that this does not work - and thats why the
error comes up. but why ?

my tap holder does not have a mechanical end postion, so i cant use the tool table - i have to re-setup z after
a tool change and i have no i/o port left vor a tool length sensor.

i am using linuxcnc 2.5.0, the g-code is generated by cambam plus 0.9.8.

tnx four your help

I have had this problem when there was an 'x' or 'y' offset entry in the tool table.
To find it, you need to open the tool table with a text editor, like gedit. Look for any entries other than 'z' and diameter and delete them (unless you need them for something).

Ray