Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 752)

Chapter 30
Using a 9/Series Dual--Processing System
30-12
For example, press to place process 1 in cycle suspend
mode, while process 1 is waiting for process 2 to execute an M101. Later,
when you request for process 1, the synchronization
M-code is re-activated and process 1 is again paused, waiting for process 2
to execute an M101. If, while process 1 is in cycle suspend mode, process
2 executed an M101, process 2 will pause at that synchronization block.
Pressing for process 1 releases the pause for both process,
and they will resume program execution.
There are two basic configurations for the spindle with dual-processing
systems. These are:
Shared Spindle Configuration -- The system contains one spindle that is
controlled by both processes (in addition to any other spindles the
system may contain).
Separate Spindle Configuration -- The system contains one or more
separate spindles for each process. In some cases these spindles are on
completely separate machines.
Figure 30.4
Example of Different Dual-Processing Spindle Configurations
Process 1
1st Threading Pass
Process 2
2nd Threading Pass
Shared Spindle Configuration
Process 2
Process 1
Separate Spindle Configuration
Dual-Turret Lathe Dual-Spindle Lathe
12599-I
Both the shared and separate spindle configurations can have additional
spindles. These spindles must be assigned to only one process and cannot
be controlled by more than one process. When a process has more than
one spindle under its control, use a G12.x command to select the currently
active spindle. Refer to chapter 17 for details.
30.4
Spindle Control for
Dual- Processing Systems