Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 108)

Manual/MDI Operation Modes
Chapter 4
4-8
This feature lets you disable the servo drives, and allows the axes to be
moved by external means (such as a hand crank attached to the ball screw)
without requiring the control to be in E-Stop. When this feature is enabled,
all position displays get updated as the axes are moved.
Use this feature in conjunction with the digitize feature described in
chapter 5.
This feature only enables when the control is in the Cycle Stop state and
the axes are not being jogged at the time of request. To use this feature, it
must be enabled in PAL by your system installer. Refer to your system
installer’s documentation for details on how the “Mechanical Handle Feed”
feature is activated and used.
Use this feature to allow the removal of a rotary table or other axis
attachment from a machine without requiring the system to be
re-configured. When activated, the control ignores messages that may
occur resulting from the loss of feedback from a removed axis such as
servo errors.
Important: This feature removes the selected axis from the control as an
active axis. Any attempt to move the removed axis results in an error.
This means that part programs that use the removed axis name cannot be
executed. Jog moves and MDI commands that attempt to move the
removed axis also results in an error.
This feature can only be enabled in AMP. The axis must be selected as
“Detached” to be considered removed. Refer to your system installers
documentation for the necessary steps involved in actually physically
removing axis hardware from a specific machine.
The machine home return operation means the positioning of a specified
linear or rotary axis to a machine-dependent fixed position, which is called
the machine home. This position is established via a home limit switch
mounted on the machine and the closest marker on the feedback device.
The execution of machine home establishes the machine coordinate
system. Since all of the AMP-assigned work coordinate systems and all of
the programmable zones are referenced from the zero point of the machine
coordinate system, none of these features are available until the machine
homing operation has been conducted. Homing the axis should be the first
operation done on the control after power-up.
4.2
Mechanical Handle Feed
(Servo Off)
4.3
Removing an Axis (Axis
Detach)
4.4
Manual Machine Homing