NPN/PNP und NO/NC: Ein technischer Leitfaden zur Vermeidung von Inversionen bei der Integration von SPS-Eingängen

1. Introduction: Why Does “Inversion” Happen? Inversion Is Not a Sensor Failure—It’s a Misalignment of Conventions In industrial automation, determinations such as “object present/not present” and “in position/not in position” are typically implemented using discrete (switching) sensor outputs and connected…









