Working racktoolchanger

Anyone have a working racktoolchanger code online that I can look at?

I don't mean the one in the sim..... I would like to see the code for one that is being used daily.

tommylight wrote:

Here is everything regarding rack tool changer on LinuxCNC site, maybe there is something useful there.
www.google.com/search?ei=SMUiX52PNYnzgQa...4KA30Q4dUDCAs&uact=5

WOW, that's cool. didn't know you could do that....lol

Yeah, there's no configs online that I can find. the sim one will probably work but I don't know that rs274 int language it uses...

Tempted to do it in python but I don't want to fall into the rabbit hole again....

The thing I don't like about the racktoolchange in the sim is it doesn't check for actual tool_in_spindle or wait for that signal to go high.
The other thing is I only see locations for picking up tool and not dropping off which is two separate gcode locations.

Guess I will try and mess with it and see if I can get it working and figure out how it works that way. kind of dangerous. but......

Would like to understand it all before I send that hunk of expensive metal off to change some tools....

i've done kinda rack tool changer in g-code. i'm not using M6 because i found no way to implement two "spindles". hacked linuxcnc a bit to extend persistent parameters range to include #5171, #5172 which i use to hold the tool-in-spindle number (nozzle in my case), so it doesn't forget it between sessions. overall it was pretty straight-forward...

nozzle_pick.ngc, nozzle_drop.ngc
github.com/yur7aev/linuxpnp/tree/master/configs/pnp/macros

in action:

WOW, that thing is fast.

I cant follow your structure.

So you are running the ngc files from gcode? You modified the PP? I don't really want to do that.

i have 4 pockets in the rack. which are basically tools. when i need to change a nozzle i call

o<nozzle_pick> call [head] [tool]

where head is 1..2, and tool is 1..4 in my case. the subroutine checks is there's a nozzle already mounted (#5171 or #5172 param). if there is, it places it back to its pocket. then it pick up a new one from [tool] pocket, saving the number into persistent param.

if i had only one head, i would just remap M6 to do exactly the same with

T<tool> M6

tommylight: i've screwed the the shelf to the wall solidly with a couple of hefty steel tubes since then, probably now i can go faster

dm17ry wrote:

i have 4 pockets in the rack. which are basically tools. when i need to change a nozzle i call

o<nozzle_pick> call [head] [tool]

where head is 1..2, and tool is 1..4 in my case. the subroutine checks is there's a nozzle already mounted (#5171 or #5172 param). if there is, it places it back to its pocket. then it pick up a new one from [tool] pocket, saving the number into persistent param.

if i had only one head, i would just remap M6 to do exactly the same with

T<tool> M6

tommylight: i've screwed the the shelf to the wall solidly with a couple of hefty steel tubes since then, probably now i can go faster

I have done some M6 remaps with python, but I just dont get this bizarre language. Which is shy I went with python. but that has its limitations and issues. This is a customers machine 2 hours away and I dont want to make trips every other week...lol

I am looking at the racktoolchange in the sim but it doesn't make sense to me. Its got the put and get in the same o routine and the z's are different in both instances not to mention the X.