ABB CI854A Profibus Interface Module

The ABB CI854A Profibus Interface Module (3BSE030220R1) enables Profibus DP communication between ABB PLC controllers and field devices in industrial automation. Designed for ABB PLC racks and distributed control systems, it supports standard Profibus DP 9-pin D-sub connectors and baud rates up to 12 Mbps, making it suitable for networks requiring reliable real-time data exchange. Mounting on a DIN rail or as a backplane plug‑in, it draws power from the industrial logic supply via the backplane and provides status LEDs for communication and fault monitoring. The module is housed in an industrial-grade enclosure for control cabinet use and is compatible with ABB PLC systems that support Profibus backplane interfaces, serving as the fieldbus link between controllers and distributed devices. Common replacements include ABB CI854AK01 Profibus Interface.