User manual HEIDENHAIN ND 522 QUICK REFERENCE GUIDE

[. . . ] At this point the reference mark evaluation should be completed. The Job Setup parameters are used to accommodate specific machining requirements for each job. Job Setup Parameters To view and change Job Setup parameters use the UP/ DOWN ARROW keys to highlight the parameters of interest and press the ENTER key. Choose between inch or millimeter by pressing the INCH/MM soft key. [. . . ] Soft Key function Opens the Job Setup menu and provides access to the installation Setup soft key. press when ready to identify a reference mark. Soft key Symbol Soft key Symbol The ND 522/523's reference mark evaluation feature automatically re-establishes the relationship between axis slide positions and display values that you last defined by setting the datum. Working without reference mark evaluation You can also use the ND 522/523 without crossing over the reference marks. press the NO REF soft key to exit the reference mark evaluation routine and continue. You can still cross over reference marks at a later time, if it becomes necessary to define datums that can be re-established after a power interruption. press the ENABLE REF soft key to activate the reference mark evaluation routine. If an encoder is setup without reference marks, then the REF indicator will not be displayed, and datums will be lost once power is turned off. ENABLE/DISABLE REF function The toggling ENABLE/DISABLE soft key, that is present during the Reference Mark Evaluation routine, allows the operator to select a specific Reference Mark on an encoder. This is important when using encoders with Fixed Reference Marks. When the DISABLE REF soft key is pressed, the evaluation routine is paused and any reference marks that are crossed during encoder movement are ignored. When the ENABLE REF soft key is then pressed, the evaluation routine once again becomes active and the next crossed reference mark will be selected. Once reference marks for all desired axes are established, press NO REF soft key to cancel out of routine. You do not have to cross over the reference marks of all the encoders, only those that you need. If all reference marks have been found the ND 522/523 will return to the DRO display screen automatically. If you do not cross over the reference marks, ND 522/523 does not store the datum points. This means that it is not possible to reestablish the relationship between axis slide positions and display values after a power interruption (switch-off). The workpiece drawing identifies a certain point on the workpiece (usually a corner) as the absolute datum and perhaps one or more other points as relative datums. the datum setting procedure establishes these points as the origin of the absolute or relative coordinate systems. The workpiece, which is aligned with the machine axes, is moved to a certain position relative to the tool and the display is set either to zero or to another appropriate value (e. Datum Hard key The easiest way to set datum points is to use the ND 522/523's probing function when you probe the workpiece with an edge of a tool. Of course, you can also set datum points in the conventional manner by touching the edges of the workpiece, one after the other with a tool and manually entering the tool positions as datum points. [. . . ] Two triangular marks in the center of the rectangle symbolize the nominal position you want to reach. Note that the square does not begin to move until the axis slide is near the nominal position. ND 522/523 can display either the radius or the diameter for you. When the diameter is being displayed, the diameter symbol (¬) is shown next to the position value. [. . . ]