Yaskawa PC NC - Manual (Page 40)

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YASNAC PCNC Operating Manual Chapter 2: Basic Operation of YASNAC PCNC
2.5.2 Manual Reference Point Return
Axes can be returned to the reference point in manual operation. Follow the procedure indicated
below.
€ Select the rapid or jog mode by placing the MODE SELECT switch on the machine
operation panel in the RAPID or JOG position.
ó Move an axis manually (manual rapid traverse or jog feed) to a position away from
the reference point (within the reference point return enabled area).When an axis is
located in range A in Fig. 2.9, reference point return can be executed correctly.
ì Turn ON the REFERENCE POINT RETURN switch.
ö Keep the JOG switch pressed corresponding to the axis returning to the reference point
and in the return direction. When the JOG switch is held pressed, the corresponding
axis starts moving in the same manner as ordinary manual axis feed operation.When
the axis reaches the deceleration point, feedrate is decelerated to a low feedrate and
the axis stops automatically at the reference point.
ú Upon completion of the reference point return, the REFERENCE POINT lamp of
that axis lights.
FIGURE 2.5.2.1: Manual Reference Point Return
t Reference Point is a specific position in the machine coordinate system. It is also called the
machine zero point or the machine reference point.
1. Once the reference point return is completed, point C indicated in Fig. 2.9 is stored to the
NC. Therefore, if reference point return is attempted while an axis is in area B, an error
occurs. In this case, the axis should first be returned to area A and then the reference point
return should be executed.
2. The axis for which the reference point return has been completed can be moved in