FBD/LD/IL element network
Symbol: 
A network is the basic unit of an FBD or LD program. In the FBD/LD/IL editor, the networks are arranged in a list below each other. Each network has a serial number on the left-hand side and can contain the following: logical and arithmetic expressions; program, function and function block calls; a jump or return instruction.
An IL program consists of at least one network. This network can contain all IL instructions for the program.
You can assign each network a title, a comment or a mark. In the TwinCAT options, category TwinCAT > PLC Environment > FBD, LD and IL you can define whether the network title, network comment and separator lines between the individual networks are displayed in the editor.
To enter a network title, click on the 1st line of the network. To enter of a comment, click on the 2nd line of the network.
See also:
- TC3 User Interface documentation: Dialog options - FBD, LD and IL
- TC3 User Interface documentation: Command Insert Network