Nodes at the machines report up to a Hub, and the Hub holds the picture across sites. Every connection is made outwards, so a plant network needs no inbound holes.
Hub and Hub Enterprise
The node opens the connection to the Hub. Nothing outside needs a route into the plant network, which is usually the sentence that ends the security conversation.
A node runs on its own. If the link to the Hub drops, the line keeps recording and the local dashboard keeps updating.
The Hub is where the organisation looks: every site, one tree, one history, one set of accounts.
The next plant is another node reporting in. The shape of the system does not change because the estate grew.
The second site is where an architecture either scales or starts costing money every time it is touched.
The trial is the full product, with every module unlocked, and it restarts as often as you like. No licence key, no registration.