The Beckhoff KS Digital Input Module Series is best understood as the KS version of Beckhoff Bus Terminals, using the same basic digital input function as the KL terminals while adding a pluggable connection level for easier wiring and service.
KS digital input terminals acquire binary signals from switches, sensors, or other field devices and pass them to the higher-level automation system in electrically isolated form, with channel states indicated by LEDs. Beckhoff offers these terminals in multiple channel counts and electrical variants, including different signal voltages and input filter times, so the module can be matched to the application. The main distinction of the KS construction is that the wired connector can be unplugged from the top of the terminal, which reduces rewiring effort during replacement or maintenance. A tighter description is that the KS series is a service-friendly digital input terminal range within Beckhoff’s Bus Terminal platform, rather than a separate control architecture of its own.
