For safety-critical applications (rail signaling, gas turbines), Siemens uses —a deterministic RTOS certified to IEC 61508 SIL 3. VxWorks runs on Siemens' fail-safe controllers where a software crash could cost lives.
When most people hear "Siemens," they think of trains, turbines, or medical scanners. However, beneath the surface of these heavy machines lies a sophisticated digital nervous system. At the heart of this system is what industry experts increasingly call the Siemens Industrial OS —a layered, evolving software strategy that bridges operational technology (OT) and information technology (IT). siemens os
By embedding OPC UA servers into their OS layer, Siemens ensures that any client—whether a Python script on a Raspberry Pi or a cloud instance in AWS—can read data from a Siemens controller without custom drivers. The Eclipse Milo project (an open-source OPC UA stack) is heavily supported by Siemens engineers. However, beneath the surface of these heavy machines