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6.1 Manual Reference Point Return Mode
happened yet, symbol !! can be seen beside the position. In case the reference point has been returned on all axes REF, i.e., the caption indicating lack of reference position is cleared from the general NC state field.
LNote:
By different machine tools return to the reference point may function contrary to the above- mentioned process. It is common, that after displaying the operation mode and pressing START button the jog buttons are to be held down for a short time, after that the process goes on automatically. In this case the process can be stopped by pressing STOP button. For details turn to the machine tool builder for an information material.
Types of Reference Point Return
There may be four types of reference point return. The types are determined by the machine tool builder axis by axis in different parameters, in function of the adapted path measuring system.
1. Reference point setting by return to switch, then standing on
The selected axis runs to the reference point switch at high speed, then stops. It comes off the switch at low speed either in the direction of the running on or in the opposite one, and searches for the first
2. Reference point return with distance coded measuring system
The selected axis searches for two neighboring
3. Reference point return on grid
The selected axis searches for the
4. Floating reference point
By pressing the appropriate jog button no movement is made, but the momentary position of the slide is registered as reference point.
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