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« on: February 26, 2008, 05:02:31 PM »
OK if you dont have limits then you are not going to be able to use soft limits unless you do a routine at start up. Mach needs to know where the table is in order to use softlimits.
What you will need to do is disable all your limits and home switches in Ports and pins. Jog the axis to the lower left of your work envelope and Z to fully up. You then press Ref all and you should see the green LEDs for each axis turn green. This has now set your machine coordinates to X0 Y0 and Z0. What you want to do now is enter 0 for X min, 0 for Y min and 0 for Z Max. next jog to the extent of each axis and make sure you are looking at the Machine coords (you can see them by pressing the Machine Coords button) you will see a red LED surrounding the button and that lets you know you are looking at the machine coords. Ok so note down the numbers you see in each axis DRO and enter them as values in X Max, Y Max and Z min.
Next make sure you have enabled the Soft limits by pressing the button, you will see a green LED surrounding it when they are active. You should now be able to Jog and Mach will stop before it reaches the ends of the axis, take care just in case its not set up right.
Every time you start Mach you will need to move to each axis extreme then press the Ref All button.
Now when in normal use you dont have the Machine CoOrds button active, this lets you jog to a position then zero the axis and it will now set that position as a work offset, if you press the Machine Cords button you will see it shows different numbers, that is because Mach is remembering the "real" Coordinates.
Hope you folow but if not ask away and you are sure to get help.
Hood