Festo Электромотор MTR-DCI - Manual (Page 29)

1. System summary
1-11 Festo P.BE-MTR-DCI-IO-EN en 1209d
Axis zero point AZ is shifted by a defined distance from the reference point REF
(axis zero point offset) and is the basis point of the software
end positions and the project zero point PZ. By defining the
axis zero point AZ and the software end positions you can
limit the work area of the linear axis to the permitted range
(work stroke).
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 a fault status will be displayed.
Project zero point PZ is a basis point which the user can freely select within the
work stroke and to which the actual position as well as the
target positions in the position set table refer. The axis zero
point AZ is the basis point for the project zero point.
The project zero point PZ is specified with the MTR-DCI and is
identical to the axis zero point AZ (project zero point offset =
0).