Chapter 10 Ladder Diagram Users can select a line, then click the add MPS icon to create a bifurcation point. Some positions cannot add MPS, so when users click add MPS icon, the diagram will show the position to insert MPS. 10.2.2 Use Device, Symbols and Constants in LD After users click ??? above an object inserted in a network, they can type an operand. The users can click in the box, and select a declared symbol on the drop-down list. Select an ARRAY data type symbol from the drop-down list and type an element in the […]. See below for ARRAY element descriptions. The users can type a device name or a symbol in the box.
If they type a symbol which is not declared, the Add Symbol window will appear after they press Enter on the keyboard. (Please refer to section 2.3.1 for more information about declaring a symbol.) 10-11