BK2020 | Beckhoff Lightbus Bus Coupler 2.5 MbaudDescription The Beckhoff BK2020 Lightbus Bus Coupler connects the Lightbus system to modular electronic terminal blocks, allowing flexible expansion up to 64 terminals or 255 with K bus extension. It processes 1,020 digital and 128 analog signals per slave with automatic terminal recognition and high speed data exchange via fiber optics. Technical Specifications Condition New Never Used Surplus Brand Beckhoff Category Industrial Communication Part