Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 455)

Axis Motion
Chapter 12
12-83
Figure 12.41
Dual Axis Configuration
Axis 1
Lead screw
Servo
motor
Axis 2
Lead screw
Servo
motor
Encoder
Dual Axes - two completely separate axes
responding to the same programming
commands.
Encoder
12043-I
The control can support two dual axis groups. A dual axis group consists
of two or more axes coupled through AMP and commanded by a master
axis name. The master axis name is used by the part programmer or
operator when commanding the dual axis group in part programs or for jog
moves.
Each axis that makes up a dual group is controlled by a separate
positioning command from the servo module. This dual group command
is based on the move generated by the control when the master axis is
commanded to a position.
All axes that make up a dual group reach end-point at the same time. This
requires that all axes that make up a dual axis group share the same
feedrate parameters, acc/dec ramps, and other axes specific data for the
group.
This section requires that you understand the following terms:
Master Axis -- A master axis is the name used to command the axes in a
dual group
Dual Group -- A dual group is a set of axes that are coupled together in
AMP and commanded by a single master axis name