industrial//industrial automation//OT

OT (operational technology) is the equipment and software that physically control an industrial process: PLC, DCS, SCADA, sensors, drives, robots. Its priorities are safety, availability, determinism and continuity of production.

OT (operational technology) is the equipment and software that physically control an industrial process: PLC, DCS, SCADA, sensors, drives, robots. Its priorities are safety, availability, determinism and continuity of production.

IT processes business information: servers, cloud, ERP, analytics, databases. Its priorities are data, scalability, integration and applications.

Industrial digitalization is largely the job of connecting OT and IT correctly without destroying the properties OT needs. The connection point is the edge gateway, which speaks industrial protocols on one side and IT languages on the other, and the data layer built on OPC UA and MQTT. That is why, in a plant, edge computing is less compute placed near the data than the border between two organizations with opposite priorities, OT (never stop) and IT (always change), with the gateway sitting on it.

The difference reaches the hardware. An office switch is built for throughput per euro and may reboot for a firmware update at any time; an industrial switch runs fanless in a cabinet from about minus 40 to 75 degrees Celsius, recovers a broken ring within tens of milliseconds and carries the time synchronization a motion line needs. Neither property comes from the label alone: the bound on delay comes from the whole network, its configuration and its traffic (determinism).

The two cultures also differ in time: an IT system is upgraded every few years, an OT system runs for fifteen to thirty (aftermarket), so the boundary always has legacy on the OT side (data contextualization).