Overcoming 30-year-old legacy On a client factory floor after erecting a new machine over two weeks, the senior start-up manager and his team are busy launching cold & hot testing. The next step in the commissioning phase is performance testing. The anticipation in the air is palpable. This machine, built to unique requirements, invokes special control algorithms (PLC code). Ensuring the smooth functioning of several physical domains (pneumatics, hydraulics, mechanics, and electrical) posed challenges of epic proportions. The automation engineer reflects on how the unavailability of the iconic controller delayed automation and sensors’ calibration.