Rockwell Automation 1794-Lxxxx PhaseManager - Manual (Page 14)

14 Publication LOGIX-UM001B-EN-P - April 2010
Chapter 1 Introduction
State Transitions The arrows in the state model show to which states your equipment can go
from the state it is in now.
• Each arrow is called a transition.
• A state model lets the equipment make only certain transitions. This
gives the equipment the same behavior as any other equipment that uses
the same model.
PhaseManager software uses the following transitions.
Holding
Hold
Idle
Start
Running
Hold
Held
Restarting
Restart
Stop
Stopping
Abort
Aborting
Stopped Aborted
Abort
Resetting
Complete
Reset
Reset
= transition
Command Done — No command. Use PSC instruction instead.
Fault (specific use of the abort
command)
Your equipment can go from any
state in the box to the stopping or
aborting state.
Type of Transition Description
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 uses these commands:
reset stop restart
start hold abort
Done Equipment goes to a waiting state when it's done with what it's doing. You don’t give the equipment a
command. Instead, you set up your code to signal when the equipment is done. The waiting state
shows that the equipment is done.
Fault A fault tells you that something out of the ordinary has happened. You set up your code to look for
faults and take action if it finds any. Suppose you want your equipment to shut down as fast as
possible if a certain fault happens. In that case, set up your code look for that fault and give the abort
command if it finds it.