ABB CI840A 3BSE041882R1Profibus DP-V1 Communication
DESCRIPTION：
CI840A is part of ABB 800xA control system. 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. For 1+1 redundant operation.
Two CI840A and one TU847 or one TU846 must be ordered.
The basic system software loaded in CI840A does not support the
following I/O modules:DI830, DI831, DI885, AI880A, DI880, DO880 and ABB Drives
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