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ABB CI840A 3BSE041882R1 Communication Module PROFIBUS S800 I/O is a comprehensive, distributed and modular process I/O system that communicates with parent controllers and PLCs over industry-standard field buses. The CI840 Fieldbus Communication Interface (FCI) module is a configurable communication interface that performs operations such as signal processing, gathering of various supervision information, OSP handling, Hot Configuration In Run, HART pass-through and configuration of I/O modules. CI840 is designed for redundant applications. The FCI connects to the controller by way of the PROFIBUS-DPV1 fieldbus. Module termination units to use, TU846 with redundant I/O and TU847 with non-redundant I/O.

The TU847 and TU846 are termination units used for connecting the CI840A interface to the fieldbus [7]. TU847 is used for redundant I/O and TU846 is used for non-redundant I/O [4].

The ABB CI840A interface supports different fieldbus protocols like PROFIBUS DP-V1, Modbus RTU, and HART [6]. This makes it a versatile interface that can be used in different applications.

Features and benefits

• PROFIBUS DP PROFIBUS-DPV1 fieldbus interface. 
• Supervisory functions of I/O ModuleBus 
• Isolated power supply to I/O modules 
• OSP handling and configuration 
• Input power fused 
• Hot Configuration In Run 
• HART pass-through 

PARTS YOU MAY NEED FOR YOUR PROJECT: