ISPSoft User Manual

Chapter 9 Function Block Diagram
Example 2: In a function block diagram, no object can precede a comparison contact, but the
output pin of the comparison contact can connect to an input pin of an AND/OR block,
an output node, the En pin of a block representing a function block, or the En pin of a
block representing an applied instruction.
*. Please refer to chapter 7 for more information about function blocks.
• Inserting an applied instruction, a comparison contact, or a function block
(1) Select a position into which an applied instruction, a comparison contact, or a function block
will be inserted in the working area. In the figure below, users are allowed to insert applied
instructions and function blocks into the positions marked with red frames, and comparison
contacts into the positions marked with green triangles.
(2) There are three ways to insert an applied instruction, a comparison contact, or a function
block in a function block diagram.
‣ Method 1
Unfold the APIs section or the Function Blocks section in the project management
area, and find the item which will be inserted. Select the item, and drag it to the position
in which it will be inserted.
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