Nematron Pointe Controller - Manual (Page 138)

Chapter 5: Developing Controller Programs Pointe Controller User Guide
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the selected block appears in the window; the types of attributes listed depend
on the type of block selected.
The window provides editing controls and fields that allow you to specify what
actions occur or what conditions are tested when the runtime system executes a
block:
The list buttons modify the command list in Process blocks and the
argument lists in subchart Start blocks . These buttons allow you to Insert
an item (after the highlighted item), Delete the highlighted item, or
move the highlighted item Up or Down in the list. The Command field
must be highlighted in order to access the list buttons. Doing this allows
you to enter multiple commands in one process block using the Insert
button.
The Build Expression ( ) button opens a dialog to build an expression
for the selected property or action.
The Close button ( ) closes the box. To reopen the box, double-click
any block.
The scroll bars allow you to move through the list of properties.
The Block Properties window always opens at a default size. You may change the
size of the currently open box by grabbing a line or corner with the cursor.
5.6.4 Building logical expressions
Most Flow Chart blocks reference a tag or expression. Tags provide the chart
access to real device inputs and outputs. With expressions you can assign new
values based on numeric calculations that often include references to other tags.
Decision blocks refer to tags and expressions that control program flow through a
chart.