Technical data

Configuration
CPU 317T: Technology Functions
A5E00251798-03
4-57
Passive homing in "Zero mark only" mode
Homing in "Zero mark only" mode is used, for example, at axes equipped with an
encoder which outputs only one zero mark in the entire traversing range of the
axis.
Axis homing starts with the detection of the zero mark. At the time of zero mark
detection, the axis position value is set to the position value at input parameters
Position of the "MC_Home" technology function.
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 direction The axis is only homed with negative approach
direction to the zero mark.
Negative direction The axis is only homed with positive approach
direction to the zero mark.
Direction of
movement
Current direction The axis is homed when it reaches the next zero
mark.
Disabled Distance to go to the zero mark is not monitored Max. distance to
zero mark
Enabled The function monitors the distance an axis travels
between the start of its homing function and
detection of the zero mark. If the difference in this
distance exceeds the configured distance, the
corresponding technology DB indicates error 801D.
The homing function is canceled.