Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide - Manual (Page 231)

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Work with Symbols
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Connection Points
Connection points on each symbol define where a Connector may connect.
Connection Points are visible in Build mode only and appear on symbols
as small x marks. When you select one with your cursor, it changes to an x
within a bounding circle.
ProcessBook symbols are originally built without Connection Points. A
Connection Point is created automatically when a Connector is dragged
into a symbol. This Point is created at the midpoint of the nearest edge of
the bounding rectangle of the symbol. The end of the Connector is moved
to the Connection Point. You may add Connection Points and move them
to specific locations.
A Connection Point can be used for either the start of the flow or the end of
a flow. The same Connection Point can be used for both. A flow can be bi-
directional.
If a second Connector is dragged over a symbol, it either moves to the
existing Connection Point or creates a new one.
For irregular figures, Connection Points are placed near the midpoint of the
side of the bounding rectangle of the figure, as shown in the illustration
below, rather than inside the figure itself. You can adjust the position of the
Connection Point to touch the actual figure.
Connector with Connection Point on the Bounding Rectangle.