Command: Seek - Universal Robots UR3/CB3 User Manual

3. Use the selector on the sequence command screen to define which of the way-
Pallet Sequence/Anchorable Sequence
In an Pallet Sequence node, the motions of the robot arm are relative to the pallet
position. The behavior of a sequence is such that the robot arm will be at the position
specified by the pattern at the Anchor Position/Pattern Point. The remaining
positions will all be moved to make this fit.
Do not use the Move command inside a sequence, as it will not be relative to the anchor
position.
"BeforeStart"
The optional BeforeStart sequence is run just before the operation starts. This can
be used to wait for ready signals.
"AfterEnd"
The optional AfterEnd sequence is run when the operation is finished. This can be
used to signal conveyor motion to start, preparing for the next pallet.

14.26 Command: Seek

A seek function uses a sensor to determine when the correct position is reached to
grab or drop an item. The sensor can be a push button switch, a pressure sensor or a
capacitive sensor. This function is made for working on stacks of items with varying
item thickness, or where the exact positions of the items are not known or too hard to
program.
When programming a seek operation for working on a stack, one must define s the
starting point, d the stack direction and i the thickness of the items in the stack.
On top of this, one must define the condition for when the next stack position is
reached, and a special program sequence that will be performed at each of the stack
positions. Also speed and accelerations need to be given for the movement involved
in the stack operation.
CB3
points in the sequence should correspond to the pattern positions.
Stacking Destacking
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14.26 Command: Seek
Version 3.3.3