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→System overview
With regard to the gateway, it acts as a traffic sniffer on the legacy machine side. It is connected to the RS485 link and it "eavesdrops" all the traffic flowing through this channel. As it is aware of the protocol used, it extracts each data from the packets exchanged. On the cloud side, the gateway uploads each extracted data along with an associated timestamp.
It is worth remembering that the '''extraction of data to be uploaded to the cloud is non-intrusive''': '''neither hardware nor software modifications of the legacy machine were required'''.
== Cloud architecture and services ==