Reference: Programming Table 4 . General Functionalities in Graphical Editors The implementation part of the graphical editors for FBD, LD, CFC, and SFC contains a toolbar in the lower right corner: R
Element: Network Symbol: A network is the base unit of an FBD or LD program. In the editor, the networks are arranged in a list. Each network is provided with an incremented network number on the left
FBD/LD/IL Element: Box Symbol: A box and its call can represent additional functions, for example IEC function blocks, IEC functions, library function blocks, or operators. A box can have any number o
FBD/LD/IL Element: Assignment Symbol: The FBD editor displays a recently inserted assignment as a line with three question marks after it. The LD editor displays a recently inserted assignment as a co
FBD/LD/IL Element: Box with EN/ENO Symbol: The element is available only in the FBD and LD editors. The box generally corresponds to the Box FBD/LD/IL element, but this box also contains an EN input a
FBD/LD/IL Element: Input Symbol: The maximum number of inputs depends on the type of box. A recently added input is first marked with ??? . You can replace the ??? string by a variable or a constant.
FBD/LD/IL Element: Jump Label The label is an optional identifier for a network in FBD and LD, which you can specify as a destination for a jump. When you insert a jump in a network, it will be added
FBD/LD/IL Element: Jump Symbol: In FBD or LD, a jump is inserted either directly before an input, directly after an output, or at the end of the network, depending on the current cursor position. You
FBD/LD/IL Element: Return The element immediately interrupts the execution of the box when the input of the RETURN element becomes TRUE . In an FBD or LD network, you can place the Return instruction
