Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 758)

Chapter 30
Using a 9/Series Dual--Processing System
30-18
Figure 30.7
Cutting a Thread Using Both Processes
Process 1
1st Threading Pass
Process 2
2nd Threading Pass
12602-I
Spindle Orient on a Shared Spindle
Both processes can request a spindle orient. If one process requests a
spindle orient while the other process’s spindle orient command has not
completed, the control generates an error. The process that requested the
second spindle orient is forced into cycle stop mode.
This system configuration contains a separate spindle for each process. In
some cases the spindles are on completely separate machines. At no time
are spindle commands shared by both processes.
This type of system operates identically to a single-process system. Each
process has full and total control of its assigned spindles. Each process can
be assigned multiple spindles, but each spindle is specifically assigned to
that process. No other process can control a spindle assigned to a specific
process. The spindle currently being controlled by a process is selected
with a G12.x command. See chapter 17 for details.
Important: Do not assume that because your system has more than one
spindle that you have this separate spindle configuration. It is possible that
one of your spindles is shared by both processes, and the additional
spindle(s) is assigned to a specific process(es). Refer to your system
installer’s documentation to determine what type of spindle configuration
your system contains.
30.4.2
Separate Spindle
Configuration