Technical data

Configuration
CPU 317T: Technology Functions
4-52 A5E00251798-03
Homing without to zero mark is used, for example, in axes for which the encoder
sets only one zero mark in the entire traversing range of the axis. This homing
command moves the axis to the zero mark. Once the axis detects the zero mark,
the homing position offset is applied at homing velocity. The axis position has now
assumed the value defined in the homing position coordinate. The diagram shown
in the lower section of the figure shows the resultant motion profile.
Meaning of the various parameters:
Parameter Value Description
Yes The axis must be homed in order to
execute absolute motion commands.
Homing required
No The axis must not be homed in order to
execute absolute motion commands.
Homing mode For this homing mode:
Homing mode: "zero mark only"
Positive
approach
direction to
zero mark
Reference point approach in positive
direction.
Start reference point
approach
Negative
approach to
zero mark
Reference point approach in negative
direction.
Entry velocity Velocity at which the axis approaches the
(shifted) homing position after detection of
the zero mark.
Shutdown velocity Velocity at which the axis starts reference
point approach and approaches the zero
mark.
Homing position offset The homing position offset function shifts
the homing position by a configured
distance, i.e. the axis moves along a
configured distance behind the zero mark
detection position at a velocity defined
under Homing Velocity.
Modulo axes always take the shortest
distance.
Disabled Distance to go to the zero mark is not
monitored
Max. distance to zero mark
Enabled Monitors the distance an axis travels
between the BERO and the zero mark. If
the difference in this distance exceeds the
configured distance, the corresponding
technology DB indicates error 801D. The
reference point approach is canceled.