Centroid Community CNC Support Forum

I am retrofitting a cnc router. Currently, the Y home switch is located at Y- at the front of the machine. I want the home switch to be at the Y+ back of the table. The machine has an ATC rack at the back. Should I locate the Y home switch so it is just the protected work area of the table and have the ATC scripts ignore the limit switch during tool change or measurement? Or, should I locate the switch at the extreme of the table and somehow prohibit the rack area during operations other than tool change and measurement?

Thanks for any experienced guidance.

Programming and setup will be simpler if you make it a home switch (and not a limit switch), and put it before the tool rack, at the end of the normal work envelope.

Your tool-change macro can then temporarily override the Y+ software travel limit -- either by putting a known positive value in that just allows access to the tool rack, or by just disabling software limits -- when needed for tool changes.

Thank you for the help.