212 EZMotion User/Programming Guide
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Queue Data Out
Queue.#.DataOut
Queue.#.DataOut is the value of the oldest piece of data in the queue. The sum of Queue,#,DataOut and the Queue offset is equal
to the parameter Queue.#.ExitPosition.
Queue Full Level
Queue.#.FullLevel
The amount of data in the queue is constantly monitored and the Queue Full source will activate when the number of pieces of data
in the queue exceeds the Full Level parameter. This is only a flag and does not indicate a fault of any kind.
Queue Clear
Queue.#.QueueClear
This destination automatically clears all of the data out of the queue. The cleared data is not saved and there is no way to recover
the cleared data. This is typically activated on power-up of the system to make sure no old data remains in the queue.
Queue Compare Enable
Queue.#.QueueCompareEnable
The Compare Enable is what causes the comparator internal to the queue to function. If the Compare Enable is inactive, then the
Queue Exit source will never activate. If activated, then the Queue Exit source will activate when the Queue Data plus the Queue
Offset is equal to the Comparator Select parameter.
Queue Empty
Queue.#.QueueEmpty
This source is active if no data is stored in the queue. It will become inactive when the first piece of data is loaded into the queue and
remain inactive until all data has been removed from the queue.
Queue Exit
Queue.#.QueueExit
This event activates when the source parameter is equal to the QueueExitPosition. Queue Exit deactivates when the Queue
Remove instruction is processed.
Queue Exit Position
Queue.#.ExitPosition
Queue Exit Position is the sum of Queue Data Out and the Queue Offset. When the Queue Exit Position is equal to the selected
source parameter. Then the Queue Exit event activates. Queue Exit position is only updated when the first piece of data is put into
the queue or when a Queue Remove instruction is processed.
Queue Full
Queue.#.QueueFull
The Queue Full source will activate if the number of pieces of data in the queue equals or exceeds the Full Level parameter. The
source will deactivate when the number of pieces of data in the queue is less than the Full Level.
Queue Offset
Queue.#.QueueOffset
The Queue Offset is the value that is added to the Queue Data Out and then compared to the source parameter to determine when
the Queue Exit event activates. For instance, if Comparator Select is set to Feedback Position, and the Queue Offset is set to 10,
and the user puts the value 5 into the queue, the queue exit function will activate when the Feedback Position is equal to 5 + 10 or
15.
Queue Overflow
Queue.#.QueueOverflow
This source activates when there is no more room in the queue to store data. The maximum number of pieces of data is determined
by the Queue Size parameter.
Queue Remove
Queue.#.Remove
The Queue Remove instruction is used in the program to remove data from the queue. When processed, the oldest piece of data will
be deleted out of the queue. The Queue Remove instruction also deactivates the Queue Exit function.
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