ABB CI540 3BSE001077R1 S100 I/O Bus Extension ModuleABB CI540 S100 I O Bus Extension Module The ABB CI540 (Product ID: 3BSE001077R1) is an S100 I O Bus Extension Module used in the ABB Advant Master Process Control System. It extends the I O bus, enabling connection between the Advant controller and remote I O racks. Compact and lightweight, it ensures reliable communication and flexible system expansion in industrial automation environments. Key Specifications Parameter Specification Product ID