Rockwell Automation Motion Control PTO Application Building Block - Manual (Page 85)

Rockwell Automation Publication CC-QS033A-EN-P - February 2014 85
Motion Axis Setup for PTO Building Block Appendix C
Homing
1. Define the parameters for the homing sequence.
a. From the Homing Direction pull-down menu, choose a home direction for your application.
In this configuration the Home direction is set to negative. The axis moves in the negative direction when motion
home command is executed.
b. Type a the value for Homing Velocity.
In this configuration the axis moves at 5.0 mm/s when MC_Home is executed.
c. Type the values for Homing acceleration, deceleration, and jerk.
d. Type the value for Creep Velocity.
In this configuration the Creep Velocity is 5.0 mm/s. It can be set to a lower value. This speed is activated when
home switch is triggered while the axis is homing.
e. Type the value for Home Offset.
In this configuration no position offset is required when the axis is homed.
f. Check Home Switch Input.
When this box is checked, motion axis requires Home switch to trigger during homing. This indicates that the
axis is near home position.
g. No action, the Home Input Terminal corresponds to the selected PTO channel. It cannot be reallocated.
h. From the Active Level pull-down, choose the active level for your Home Switch Input.
If Active Level is High the controller acknowledges that the home sensor is triggered when terminal is TRUE.
i. Clear Home Marker Input.
In this configuration the Home Marker Input is set to disabled. When the Home Marker Input is set to enabled,
motion axis requires additional trigger from the selected input during homing. This is usually the Z phase of
encoder input.
j. If your application uses a home marker, from the Input pull-down menu, choose an input terminal for the Home
Marker Input.
k. If your application uses a home marker, from the Active Level pull-down menu, choose an active level for the
Home Marker Input signal.
If Active Level is High the controller acknowledges that Home Marker Input is triggered when terminal is TRUE.
a
b
c
d
e
f
g
h
i
j
k