There are two meanings:

• In a ladder diagram:

  A network is a set of interconnected graphic elements. The scope of a network is local, concerning the organizational unit (section) of the program containing the network.

• With expert communication modules:

  A network is a set of stations that intercommunicate. The term network is also used to define a group interconnected graphic elements. This group then makes up part of a program that may comprise a group of networks.