Fagor CNC 8055i, Installation Manual

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Installation manual
CNC 8055
CNC 8055i
CONC
EPTS
7.
S
OFT
: V02.2
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Reference systems
7.6.2 Setting on systems without distance-coded feedback
Machine reference point
The reference point must be adjusted on one axis at a time. The following procedure is
recommended:
• Indicate in the axis parameter REFPULSE (P32) the type of marker pulse Io being used for Home
Search.
• Likewise, set axis parameter REFDIREC (P33) to indicate the direction of the axis when
searching Home.
• On the other hand, set axis parameter REFEED1 (P34) that defines the approach feedrate of
the axis until the home switch is pressed and axis parameter REFEED2 (P35) that indicates the
homing feedrate until the reference mark (marker pulse) is detected.
• The machine reference point will be set to 0, axis parameter REFVALUE (P36).
• Once in the JOG mode and after positioning the axis in the right area, start homing the axis.
When done, the CNC will assign a "0" value to this point.
• After moving the axis to the Machine Reference Zero or up to a known position (with respect
to Machine Reference Zero), observe the position reading of the CNC for that point.
This will be distance from the Machine Reference Zero to that point. Therefore, the value to be
assigned to axis parameter REFVALUE (P36), which defines the coordinate corresponding to
the Machine Reference Point (physical location of the marker pulse).
REFVALUE = Machine coordinate – CNC reading.
Example:
If the point whose known position is located 230 mm from Machine Reference Zero and the
CNC reads -123.5 mm as the coordinate value for this point, the coordinate of the Machine
Reference Point with respect to Machine Reference Zero will be:
"REFVALUE" = 230 - (-123.5) = 353.5 mm.
• After assigning this new value, press [RESET] so it is assumed by the CNC.
• The axis must be homed again in order for it to assume its right reference values.