Omron NY532-1500 Reference Manual page 260

3 Axis Command Instructions
Example 3: Differences in Starting Cam Operation of the Slave Axis for Differences
in StartMode
You can use StartMode to specify whether the value that is specified for MasterStartDistance (Master
Following Distance) is treated as an absolute value or a relative value.
This example describes the differences in starting cam operation of the slave axis for differences in
StartMode. The cam table settings are the same as in the previous example.
The conditions for starting cam operation are given in the following table.
Input variable
Periodic (Periodic Mode)
StartMode
StartPosition (Cam Table Start Position)
MasterStartDistance (Master Following
Distance)
For both conditions 1 and 2, the InCam (Cam Motion) output variable changes to TRUE when the mas-
ter axis passes 40°.
For condition 1, StartMode is set to _mcAbsolutePosition (absolute position), so the InSync output vari-
able changes to TRUE and the slave axis starts cam operation when the master axis passes 80°.
For condition 2, StartMode is set to _mcRelativePosition (relative position), so the InSync output vari-
able changes to TRUE and the slave axis starts cam operation when the master axis passes 120° (=
40° + 80°).
3-176
Condition 1
TRUE: Periodic
_mcAbsolutePosition (absolute
position)
40
80
NY-series Motion Control Instructions Reference Manual (W561)
Condition 2
TRUE: Periodic
_mcRelativePosition (relative
position)
40
80