Chapter 11 Function Block Diagram Example 3: The use of an AND block and an OR block in a function block diagram is equivalent to the use of a serial connection and a parallel connection in a ladder diagram. Inserting an AND/OR block (1) Select a position into which an AND/OR block will be inserted in the working area. Users are allowed to insert AND/OR blocks into the positions marked with red frames in the figure below. (2) In addition to the structure in the figure above, users may be allowed to insert an AND/OR block into another structure. If users are allowed to insert an AND/OR block into the position selected, / on the toolbar can be clicked.
After is clicked, an AND block will be inserted. After is clicked, an OR block will be inserted. 11-13