ABB CI840A Programmable Logic Controller Module

The ABB CI840A Profibus DP-V1 Communication Interface Module delivers reliable fieldbus connectivity between ABB controllers and Profibus DP-V1 devices, enabling robust, redundancy-friendly communications within S800 I/O networks. Identified by part number 3BSE041882R1, CI840A is available in variants such as CI840A-EA for high-performance automation and supports 1+1 redundant operation in appropriate configurations. As a universal controller interface, it connects ABB AC 800M controllers to external devices and provides a four-channel PROFIBUS DP-V1 interface that supports remote I/O and seamless configuration in run time. The module is designed for ABB's S800 I/O communications framework and integrates with master controllers to facilitate efficient data exchange across fieldbus segments, including hot configuration in run capabilities. Typical applications include industrial automation environments where PROFIBUS DP-V1 field devices must be coordinated with ABB controllers—manufacturing lines, process automation, and packaging and material handling systems.