On 04/12/2015 02:41 PM, Neil wrote: > The touch-off is different as far as I've discovered so far. My min and > max Z is -25 and +100 in the .ini file. If I move to what the machine > thinks is 0 (wherever it was when the table booted up), and touch that > off to say 40, then the machine will still only move -25 *from there*... > so min would then be +15. What I want is to change the machine > coordinates, telling EMC that the machine was not at zero on power up, > and tell it where 0 is (which is what homing should do). > > First, home all axes with whatever switches, etc. are available. Then, select Axis to display the machine coordinate system. Now, jog to the extremes of travel you feel are safe limits, and write down the machine coordinates at those points. In the text editor of your choice, edit these values into MIN_LIMIT and MAX_LIMIT parameters in each [AXIS_n] section of the .ini file you are using. These values are checked on every move, including jogs, and will prevent movement beyond that point. They will also be checked when a program is loaded or run, and a warning will be displayed.
The touch off sets WORK coordinate offsets from the home position, and has nothing to do with limits. (Actually, it "moves" the workpiece volume relative to home, so if the moves in the loaded program would exceed the machine travel limits, it can cause a "program will exceed X minus limits at line 123" error after you change the work offset with a touch-off.) Jon ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
