Currently there isn't a way to do what you want. I had asked a while
back and one of the developers had produced this untested patch.. This
was in 2010 so I don't know how much it applies to the current code.
diff --git a/src/emc/task/emccanon.cc b/src/emc/task/emccanon.cc
index 6f36a75..e8f3ff4 100644
--- a/src/emc/task/emccanon.cc
+++ b/src/emc/task/emccanon.cc
@@ -1797,9 +1797,9 @@ void CHANGE_TOOL(int slot)
x = FROM_EXT_LEN(TOOL_CHANGE_POSITION.tran.x);
y = FROM_EXT_LEN(TOOL_CHANGE_POSITION.tran.y);
z = FROM_EXT_LEN(TOOL_CHANGE_POSITION.tran.z);
- a = FROM_EXT_ANG(TOOL_CHANGE_POSITION.a);
- b = FROM_EXT_ANG(TOOL_CHANGE_POSITION.b);
- c = FROM_EXT_ANG(TOOL_CHANGE_POSITION.c);
+ a = canonEndPoint.a;
+ b = canonEndPoint.b;
+ c = canonEndPoint.c;
u = FROM_EXT_LEN(TOOL_CHANGE_POSITION.u);
v = FROM_EXT_LEN(TOOL_CHANGE_POSITION.v);
w = FROM_EXT_LEN(TOOL_CHANGE_POSITION.w);
I never gotten around to trying it. It makes it so that none of the
rotorys move during a tool change. I am sure there are other ways too -
to the simple as moving the axis in gcode before the tool change - to
the more complicated gcode remapping.
http://linuxcnc.org/docs/devel/html/remap/structure.html
sam
On 11/27/2012 9:27 AM, Kasey Matejcek wrote:
> Is there a way I can prevent my A axis from moving when I do a tool change
>
> I have the TOOL_CHANGE_POSITION = 0 0 0 in the ini file I left the forth
> zero off doesn't help
>
> Right now I running a part and the A axis get wond up to 900 deg then it
> does a tool change it unwinds it to zero
>
> Then after the tool change winds backup to 900 deg and start machining again
> it take a long time that I would like to elemenate
>
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