Festo Электромотор MTR-DCI - Manual (Page 37)

1. System overview
1-15 Festo P.BE-MTR-DCI-CO-EN en 1209a
1.6 Measuring reference system
For commissioning, a measuring reference system for refer-
encing the reference coordinates must be defined. By means
of the measuring system all (absolute) positions are defined
and movement can be made to them.
1.6.1 Reference points and positioning range
The measuring reference system is defined as follows:
1. Homing for defining the reference point
2. Setting the zero point (offset axis zero point and project
zero point)
3. Limiting the positioning range (software end positions).
Reference point REF binds the measuring reference system to a reference switch
or a fixed stop, depending on the homing method. (see also
section “Homing reference travel”).
Axis zero point AZ is shifted by a defined distance to the reference point REF
(offset of the axis zero point).
Project zero point PZ is a reference point within the effective stroke which the user
can select, and to which both the actual position and the
target positions in the position record table refer.
The project zero point is shifted by a defined distance to the
axis zero point AZ (offset of the project zero point). The
project zero point PZ can only be set via FCT or CAN/CI
object 21F4
h / FHHP 500 (not on the control panel).
Software end positions The permitted positioning range (work stroke) is limited by
the settings of the software end positions. The software end
positions refer to the axis zero point. If the target position of
a positioning command lies outside the software end posi-
tions, the positioning command will not be processed and an
error status will be set.