Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 742)

Chapter 30
Using a 9/Series Dual--Processing System
30-2
Dual-process systems operate almost exactly the same as their
single-process counterparts. Each process functions as an independent
9/Series control.
With the exception of shared dual-processing paramacro parameters, there
is little shared data between processes. Each process has its own offset
tables, programmable zone tables, and paramacro parameters. Your system
installer:
determines how your system operates in PAL. For example, pressing
<CYCLE START>
could be written in PAL to start both processes, start the
selected active process, or separate
<CYCLE START>
buttons could be
installed for each process. Most operations can be duplicated on a per
process basis.
establishes priorities for your processes in AMP. The priority of a
process determines how much time the control spends executing blocks
in one process relative to another process. Your system can be set up to
give one process almost exclusive use of the control’s time with the
other process executing only when time becomes available. Refer to
your system installer’s documentation for more information on the
priority configuration in your system.
Selecting the Active Process
When you operate a 9/Series dual-process system, multiple processes exist
that are usually controlled by the same MTB and operator panels. Your
system installer can install separate MTB panels for each process on some
machines. An active process must be selected to determine which process
is currently being controlled by the operator panel. The line immediately
above the softkey names on the CRT indicates which process is currently
active. The currently active process appears in reverse video on that line.
When you operate a 9/Series dual-process system, multiple processes exist
that are usually controlled by the same MTB and operator panels. Your
system installer can install separate MTB panels for each process on some
machines. An active process must be selected to determine which process
is currently being controlled by the operator panel or MTB panel. The line
immediately above the softkey names on the CRT indicates which process
is currently active. The currently active process appears in reverse video
on that line.
30.2
Operating a
Dual-Processing System