Festo SFC-LAC CO Series, Manual

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1. System summary
1−15
Festo P.BE−SFC−LAC−CO−EN en 0708NH
1.3 Measuring reference system
Homing During homing the position of the reference point REF is
ascertained. When homing is concluded, the axis stands at
the axis zero point AZ.
Homing method The homing method defines the manner in which the
reference point REF is ascertained.
Reference point REF binds the measuring reference system, depending on the
referencing method, to a reference switch or a fixed stop.
Axis zero point AZ is shifted by a defined distance from the reference point REF
(offset of the axis zero point).
The software end positions and the project zero point refer to
the axis zero point.
Software end positions limit the permitted positioning range (work stroke). If the
target position of a positioning command lies outside the
software end positions, the positioning command will not be
processed and an error status will be set.
Project zero point PZ is a reference point freely selected by the user to which the
actual position as well as the target position from the posi
tion record set refer.
The project zero point is shifted by a defined distance from
the axis zero point AZ (offset of the project zero point). The
offset of the project zero point cannot be adjusted via the
control panel.