Rockwell Automation 1794-Lxxxx PhaseManager - Manual (Page 46)

46 Publication LOGIX-UM001B-EN-P - April 2010
Chapter 3 Guidelines
State Completion
Guidelines To leave an acting state, you usually signal that the state is done doing what it
had to do. Use the Phase State Complete (PSC) instruction to signal when a
state is done.
Use the state model to see which transitions need a PSC instruction.
IMPORTANT
The PSC instruction doesn’t stop the current scan of a routine.
When the PSC instruction executes, the controller scans the rest of the routine and
then transitions the equipment phase to the next state. The PSC instruction does not
terminate the execution of the routine.
Holding
Hold
Idle
Start
Running
Hold
Held
Restarting
Restart
Stop
Stopping
Abort
Aborting
Stopped Aborted
Abort
Resetting
Complete
Reset
Reset
PSC instruction
done
done done
done done done
PCMD instruction
Type of transition Description Instruction
Command A command tells the equipment to start doing something or do something
different. For example the operator pushes the start button to start production
and the stop button to shutdown.
PhaseManager software Software uses these commands:
PCMD
Use an Equipment Phase
Command (PCMD) instruction
to give a command. Or use
RSLogix 5000 software.
reset stop restart
start hold abort
Done Equipment goes to a waiting state when it's done with what it's doing. You
set up your code to signal when the equipment is done. The waiting state
shows that the equipment is done.
Exception: The restarting state goes to the running state when it’s done.
PSC
Use the Phase State Complete
(PSC) instruction to signal
when a state is done. See
page 59 for more information.