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There are two Resource types: single resources and resource groups.

 

•A resource group is a resource composed of multiple parts that need to be ordered separately.

 

•A single resource is the opposite of a resource group. It consists of one part only, and it is ordered as such. A resource group therefore consists of multiple single resources. A typical example of a resource group is a contactor with an auxiliary contact block. Another example is a signal lamp that may consist of a socket, a light bulb, a lens and maybe a few mounting devices. In the circuit diagram, the signal lamp corresponds to one single symbol. A resource group makes it possible to specify all necessary single resources with one single index in the circuit diagram. That is practical, convenient, and effective!