Rockwell Automation 999 IMC S Class Compact Motion Controller (Cat. No. 4100-999-122) - Manual (Page 89)

Understanding IMC-S/23x Setups 5-9
Publication 999-122 - January 1997
To configure a virtual axis, first select the address of the controller or
ALEC (AxisLink Encoder Converter module) and the physical or
imaginary axis on that controller which is to be used for this virtual
axis. When AxisLinking to an ALEC, always select
AXIS0 . Read the
controller or ALEC address from the front panel Address selector
switch of the appropriate controller or ALEC. If you select the address
of the controller you are setting up, the message
is displayed and you must select another address. The axis associated
with an AxisLink virtual axis must be on another motion controller or
ALEC.
AxisLink virtual axes may be configured to provide either the actual
or command position of the associated physical axis. Select the desired
axis type for this virtual axis. If the associated physical axis is
configured as
MASTER ONLY on its resident motion controller, actual
position is always provided, regardless of the selected axis type. If the
virtual axis is AxisLinked to the imaginary axis in another motion
controller,
COMMAND axis type is automatically selected and the
message
is displayed, since the imaginary axis does not have an actual position.
The direction of motion of virtual axes may also be defined to be the
same as or opposite from the associated physical axis. In most cases,
answer
SAME to the Relative Direction? question so that the
virtual axis directions are the same as the physical axis directions. If
OPPOSITE is selected, motion of the physical axis in the positive
direction results in virtual axis motion in the negative direction, and
vice versa.
!
ATTENTION: Do not select command axis type if
the physical axis is configured as MASTER ONLY.
Controller Address? #
*** Cannot Select This Controller!
Axis on Controller #: IMAGINARY
Axis Type is COMMAND