Cnv_QueLen Function

Returns the number of items in the specified conveyor's queue.

Syntax
Cnv_QueLen (conveyorNumber [, paramNumber ] )

Parameters

conveyorNumber

Specify the conveyor number as an integer (1-16).

paramNumber

Optional. Integer expression that specifies which data to return the length for.

Symbolic constant	Value	Meaning
CNV_QUELEN_ALL	0	Returns total number of items in queue.
CNV_QUELEN_UPSTREAM	1	Returns number of items upstream.
CNV_QUELEN_PICKUPAREA	2	Returns number of items in pickup area.
CNV_QUELEN_DOWNSTREAM	3	Return number of items downstream.

Return Values
Integer number of items.

Description
Cnv_QueLen is used to find out how many items are available in the queue. Typically, who will want to know how many items are in the pickup area.

You can also use Cnv_QueLen as an argument to the Wait statement.

Note

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This command will only work if the Conveyor Tracking option is active.

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See Also
Cnv_QueGet

Cnv_QueLen Function Example

Do
  Do While Cnv_QueLen(1, CNV_QUELEN_DOWNSTREAM) > 0
    Cnv_QueRemove 1, 0
  Loop
  If Cnv_QueLen(1, CNV_QUELEN_PICKUPAREA) > 0 Then
    Jump Cnv_QueGet(1, 0) C0
    On gripper
    Wait .1
    Cnv_QueRemove 1, 0
    Jump place
    Off gripper
    Jump idlePos
  EndIf
Loop