Home Search (Gantry Axes) - Fagor CNC 8060 Installation Manual

11.5.2
11.
CNC 8060
CNC 8065
(R : 1709)
EF
·578·

Home search (gantry axes).

Gantry axes may be homed in the same three ways described for the rest of the axes and
spindles. The following requirements must be met when setting the parameters for the
Gantry axes.
• The type of reference mark (parameter I0TYPE) must be the same for both axes.
• When not using distance-coded reference marks (I0), either both axes or just the master
axis may have a home switch ( parameter DECINPUT).
Analog axes and velocity-Sercos axes.
Home search with a feedback system that does not have distance-coded reference
marks. The master and slave axes have a home switch.
Parameter. Meaning.
I0TYPE Reference mark (I0) type. Normal (non-distance-coded) on
both axes.
To be defined for the master and slave axes.
DECINPUT The axis has a home switch.
To be defined for the master and slave axes.
REFDIREC Home searching direction.
To be defined for the master axis.
REFFEED1 Fast home searching feedrate.
To be defined for the master axis.
REFFEED2 Slow home searching feedrate.
To be defined for the master axis.
REFVALUE Position of the reference point.
To be defined for the master and slave axes.
REFSHIFT Offset of the reference point.
To be defined for the master and slave axes.
The CNC starts moving both axes in the direction indicated by parameter REFDIREC of the
master axis. This movement is carried out at the feedrate indicated by parameter REFFEED1
of the master axis until any of the axis presses its home switch. After pressing the home
switch, both axes move at REFFEED2 feedrate of the master axis until the axis that pressed
the home switch detects its reference mark. After detecting the reference mark, the CNC
resets the position value of this axis to the value set by parameter REFVALUE and starts
homing the second axis.
To home the second axis, both axes move at the feedrate indicated by parameter REFFEED1
of the master axis until the second axis presses its home switch. After pressing the home
switch, both axes move at REFFEED2 feedrate of the master axis until the axis that pressed
the home switch detects its reference mark. After detecting the reference mark, the CNC
resets the position value of this axis to the value set by parameter REFVALUE.
If the first axis pressing its home switch was the master and its parameter REFSHIFT is other
than zero, the slave axis does not start homing until the master axis ends the movement
corresponding to parameter REFSHIFT. The REFSHIFT parameter of the slave axis is
applied when it resets the position value after having detected the reference mark without
making the movement.
Home search with a feedback system that does not have distance-coded reference
marks. Only the master axis has a home switch.
The CNC starts moving both axes in the direction indicated by parameter REFDIREC of the
master axis. This movement is carried out at the feedrate indicated by parameter REFFEED1
of the master axis until this axis presses its home switch. After pressing its home switch, both
axes move at REFFEED2 feedrate of the master axis until the slave axis detects its reference
mark. After detecting the reference mark, the CNC resets the position value of the slave axis
to the value set by parameter REFVALUE and considering parameter REFSHIFT. To update
the position value, the axis does not move.
Then, the master axis searches the reference mark. Once the reference mark has been
detected, the CNC resets its position value to the one set by parameter REFVALUE and
I n s ta ll a t io n ma n u a l.