ISPSoft User Manual 10.2.4 Inserting Applied Instructions and Function Blocks The applied instructions and function blocks in a ladder diagram in ISPSoft are represented by blocks. The pins of a block representing an applied instruction include the pins corresponding to the operands specified in the applied instruction and an En pin. The pins of a block representing a function block include the pins corresponding to the symbols declared in the function block and an En pin. The En pin of a block representing an applied instruction or a function block is connected to the logic state preceding the En pin.
If the logic state connected to the En pin of a block representing an applied instruction or a function block is ON, the applied instruction or the function block will be executed. The pins of a block representing a function block include an Eno pin whereas the pins of a block representing an applied instruction do not include an Eno pin. An applied instruction can only be put at the end of a network in a ladder diagram, and can not be followed by any object. Besides, users can type a function block instance in the box above a function block. Please refer to chapter 7 for more information.
Users can insert an applied instruction or a function block in a ladder diagram in ISPSoft in one of the three ways described below. 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. 10-14