Build rack tool change with classic ladder or..

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19 Jun 2019 08:56 #137273 by Pro_El
Hello, i investigate long time what path to take to build tool change.I am new to LinuxCnc so sorry for stupid questions.. I use Mesa board 7i77 and linuxcnc 2.8 with all updates. Everything is working like it should on Maho NC50 and now time for tool-change..
I now that remapping M code and G code should be right way but i cannot figure out how to do it.. so many unknown..
I am very familiar with Ladder logic so this is my first step i want to try, but i have a lot of unknown steps i need to do..
First how to automatically move to axis to zero position before tool-change?? can i do it with classic ladder?? i think not :(
Second if you recommend to continue with classic ladder, then when M6 shown on gcode what output or register will initialize the start of tool-change procedure and what input will wait for the competition of the same procedure and to continue with gcode..
Great Community, hope to be part of..

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19 Jun 2019 11:12 #137279 by Yannis
I m trying the same thing and i m lost also
you can check here some first steps
forum.linuxcnc.org/38-general-linuxcnc-q...xis-machine-retrofit

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19 Jun 2019 12:32 #137284 by Pro_El
Thank you for nice link for remapping G-code, but nothing for ladder way doing things..

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19 Jun 2019 17:53 #137299 by pl7i92
why dont you simply go with M6 remap and put a ngc that loads the tools to the position
files are here
github.com/araisrobo/linuxcnc/tree/maste...emap/rack-toolchange

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19 Jun 2019 18:01 - 19 Jun 2019 20:16 #137302 by Pro_El
Thank you, I will try this and inform here for the output..
Last edit: 19 Jun 2019 20:16 by Pro_El.

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19 Jun 2019 23:46 - 20 Jun 2019 00:30 #137316 by bevins

Thank you, I will try this and inform here for the output..


You cannot move an axis within classicladder. If you dont need to then you will be ok otherwise as PI7i92 stated remap M6 with NGC.

Check the threads as there are a couple doing it now.

Some mandatory reading:
remap config github
remapping docs
Last edit: 20 Jun 2019 00:30 by bevins.

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20 Jun 2019 18:35 #137404 by andypugh
A rack tool changer requires axis movement, which is very easy with a G-code remap and next-to-impossible with Ladder.

So I would say that the answer is certainly a G-code remap.

There is even a sample config on your hard-drive already.

Open the config picker and go to sim->axis->remap->racktoolchanger

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