ISPSoft User Manual Example 3: If M0 is ON, the function block BLACK will be executed. If M0 is OFF, the function block WHITE will be executed. Example 4: The figure below is an incorrect example. Inverse logic can not be inserted into a node which does not represent a Boolean device or a symbol whose data type is BOOL. Inserting inverse logic (1) Select a position into which inverse logic will be inserted in the working area. Users are allowed to insert inverse logic into the positions marked with red frames in the figure below. Although the operand assigned to the output pin of the instruction CMP is a Boolean operand, inverse logic can not be inserted into the output pin of CMP.
Besides, inverse logic can not be inserted into a position which does not have an output node, and a position which is not connected to an object. For example, inverse logic can not be inserted into the input node in network 3. (2) In addition to the structure in the figure above, users may be allowed to insert inverse logic into another structure. If users are allowed to insert inverse logic into the position selected, on the toolbar can be clicked. After users click , inverse logic will be inserted. 11-16