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CI840A belongs at the head of an S800 I/O station, not in the AC 800M CEX-Bus communication-interface position.
TU846 is used for redundant I/O, while TU847 supports non-redundant I/O; the selected base defines the station wiring arrangement.
A replacement plan should include station address, fieldbus path, ModuleBus map, HART requirements, OSP behavior, and I/O acceptance tests.
CI840A 3BSE041882R1 Field Communication Interface Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
ABB CI840A 3BSE041882R1 Field Communication Interface Specs
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.





