Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 781)

Chapter 30
Using a 9/Series Dual--processing System
30-13
CAUTION: These interference boundaries only help prevent
collision with another interference boundary configured for
another process. They do not protect against collisions with
other machine fixtures that may or may not be protected by a
programmable zone or software overtravel. They do not
account for any tool offsets that are active at the time. They are
absolute positions.
Figure 30.2
Interference Check Helps Prevent Tool Fixtures from Colliding
Area protected against collision
by interference checking. No
collision between these areas.
Interference checking does not protect programmable zones.
Only tool tip location is monitored for a programmable zone. Possible
collision between these areas.
Process 1
Process 2
V
--W
Y
X
--Z
C axis (Shared Rotary Axis)
U
Programmable Zone 1
Important: Shared axes can only be defined in an interference zone in one
process. If the system installer defines the same shared axis to be in an
interference zone for both processes the control generates an error.