Lenze ApplicationTemplate PackML (PLC Designer R3-x) - Manual (Page 70)

Architecture: The ApplicationTemplate PackML in detail
State machine in detail
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Lenze · ApplicationTemplate PackML · 1.0 EN - 05/2014
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HELD Waiting Yellow This state is reached as described for the HOLDING state. In the HELD
state, the machine is stopped either by a complete stop or by a
continuous "dry running".
• As soon as the INTERNAL machine state changes/the operator
triggers the UNHOLD command, the machine changes to the
UNHOLDING state.
• Usually, the Performance Management/OEE system considers the
HELD state (waiting for the entry of the operator) as "not available".
HOLDING Active green This state is reached if INTERNAL machine states causes the production
of the machine to stop. This means that the machine leaves the EXECUTE
state due to an INTERNAL trigger/state.
• Usually, the HOLDING state takes place in case of regularly occurring
machine states that require an action of the operator in order that
the machine is able to continue the production.
• The HOLDING state can be automatically or manually triggered/
retracted again by the operator. The regular filling of material, for
instance, needs an action of the operator, as the filling of adhesive
dispensers or cardboard storages. This may be required if due to the
mechanical construction of the machine a certain action is only
possible when the machine is stopped.
• Filling up material is a regular working sequence in the production
process. Thus, it is an integral part of the machine. (If it was an
external part, this subfunction would bring the machine to a
standstill by ABORTING/STOPPING). Usually the machine is stopped
in a controlled manner in the HOLDING state and then changed to the
HELD state.
• In order to restart the machine in a controlled manner after the HELD
state, all relevant process setpoints/return states of the procedures
have to be saved that are available at the time of the HOLD command
in the machine control.
IDLE Waiting Yellow This state indicates that the RESETTING has been completed. The IDLE
state keeps the current state of the machines that have been reached
during RESETTING state and executes the requested operations.
RESETTING Active green This state is active after the RESET command has been triggered in the
RESET/STOPPED state.
• Error and stop events are reset.
• Usually, the RESETTING state safety appliances. The machine changes
to the IDLE state to wait for the START command. This ensures that
the machine does not carry out any dangerous movements in this
state.
STARTING Active green This state comprises the steps required for starting the machine and is
caused by a START command. After a successful start: Change to the
EXECUTE state.
STOPPED Waiting Yellow After the STOPPING state has been left, the machine is switched on and
at standstill. The communication with other systems is fully functional.
The RESET command triggers the change to the RESETTING state.
stopping Active green This state carries out steps that stop the machine in a controlled manner,
see STOPPED state. The machine cannot be started again until a restart
is executed.
SUSPENDED Waiting Yellow This state is reached as described for the SUSPENDING state. In this state,
the machine stops either by a complete stop or by continuously moving
without producing until the external state has normalised.
• Typically, the state changes from SUSPENDED to UNSUSPENDING
without the operator having to trigger a command.
• Usually, the Performance Management/OEE system considers the
SUSPENDED state (blockade/supply shortfall) as "available".
State Category Colour Description