A method, an engineering tool, and a computer program element for analyzing a communication of secondary devices in a Substation Automation System for a substation are disclosed. The secondary devices are connected to a communication network for controlling an industrial process, which industrial process can include a plurality of operational aspects of primary devices. Sender secondary devices are configured to send data packets, which can include a multitude of data objects, to predetermined receiver secondary devices via the communication network, wherein the data packets transmitted via the communication network are captured, a functional interrelation or operational aspect of the secondary devices and the primary devices is retrieved from an SCD-file representing the formal configuration of the substation is retrieved, and the secondary devices are grouped according to the retrieved operational aspect and a time sorted graphical representation of the data objects, the secondary devices and the operational aspects is generated.