Outline - Omron NY532-1500 User Manual

8 Homing
8-1

Outline

This section describes the operations that are performed when the MC Function Module is combined
with an OMRON G5-series Servo Drive.
To perform positioning to absolute positions in a positioning system, you must first define the home. For
example, if you want to perform positioning to the position (axis 1, axis 2) = (100 mm, 200 mm) in the
XY plane shown below, you must define the position of home (0,0). The process of defining home is
called homing.
Axis 2
(100,200)
(0,0)
In the MC Function Module, use the motion control instruction MC_Home or MC_HomeWithParameter
to define home.
Name
Homing
Precautions for Correct Use Precautions for Correct Use
• The defined home is lost in the following situations.
• When MC_SetPosition is executed.
• When an overflow or underflow occurs in Linear Mode.
• When homing is started.
• The control state of EtherCAT communications is not Operational state.
• Some of the homing functions are restricted for the NX-series Position Interface Units. Refer to
the NX-series Position Interface Units User's Manual (Cat. No. W524) for details.
Additional Information
If an OMRON 1S-series Servomotor or G5-series Servomotor with an absolute encoder is used,
or if an OMRON G5-series Linear Motor Type Servomotor/Servo Drive with built-in EtherCAT
communications is used with an absolute external scale, home is defined when the Enable input
variable to the MC_Power instruction changes to TRUE.
Home is also defined when EtherCAT process data communications change from a non-estab-
lished state to an established state.
8-2
Axis 1
Home is defined by actually moving the motor and using the limit sensors, home prox-
imity sensor, and home input signal to determine the position of home.
Use a proximity sensor or the encoder's Z phase signal as the home input signal.
NY-series Industrial Panel PC / Industrial Box PC Motion Control User's Manual (W559)
Description