ABB CI840 EXC3BSE022457R1 Profibus Communications Interface ，ABB Advant S800 I/0，ABB Advant-800xA Size: 5.0″ x 3.0″ x 5.0″ (12.7 cm x 7.6 cm x 12.7 cm) Weight: 0 lbs 9.0 oz (0.3kg).The ABB CI840 is a Fieldbus Communication Interface (FCI) module 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. It is part of the S800 I/O family, which is a highly flexible and modular process I/O system that communicates with parent controllers and PLCs over industry-standard field buses
The CI840 FCI is designed for redundant applications and connects to the controller by way of the PROFIBUS-DPV1 fieldbus. The module termination units to use are TU846 with redundant I/O and TU847 with non-redundant I/O. The CI840 has a communication protocol of PROFIBUS DP-V1 and is a slave that supports line and module redundancy, hot swap, and is used together with HI Controller
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