Geometries with orientation support 
 
  Rockwell Automation Publication MOTION-UM002F-EN-P - February 2018  197 
This is shown graphically as follows. 
 
 
Important: 
Per Euler angle convention, -180.0
  is equal to +180.0   and is also a 
valid Rx position in the mirror non-flip region. However, due to limitations 
imposed to support J4 turns counter, this value is not permitted for use in 
specifying Rx position. 
See also 
Rz axis position in the mirror non-flip and mirror flip regions on page 197
 
Mirror image Ry orientation on page 196 
 
Robot geometries that exhibit the mirror image Ry position behavior have an 
impact on the Rz position depending on which region the Ry axis is operating. 
This relationship is shown in the following table. 
Region  J4 range  Rz position 
mirror non-flip 
-180
  <= J4 < 180  
-(J4) 
mirror flip 
0 <= J4 < 180
  -(J4) + 180.0  
mirror flip  -180° <= J4 < 0 
-(J4) - 180.0
 
 
Tip:  The Rz flip in position does not result in any motion on the J4 axis. 
See also 
Mirror image Ry orientation on page 196
 
Rx axis position in mirror non-flip and flip regions on page 196 
Example of mirror image and flip behavior on Rx and Rz axes on page 198 
Rz axis position in mirror 
non-flip and mirror flip regions