Products Description
ABB CI854 3BSE025347R1 PROFIBUS‑DP Master Communication Interface Module

Technical Specifications
Model: CI854
Part Number: 3BSE025347R1
Brand: ABB
Product Type: PROFIBUS‑DP master communication interface module
Communication Protocol: PROFIBUS‑DP‑V0
Bus Connector: Single 9‑pin D‑Sub female connector
Backplane Bus: CEX‑Bus, maximum 12 modules per AC800M controller
Max Nodes: Up to 98 PROFIBUS‑DP slave devices
Baud Rate: 9.6kbit/s ~ 12Mbit/s adaptive
Feature: Support hot‑swap replacement
Power Supply: Powered by CEX‑Bus backplane bus
Operating Temperature: 0℃ ~ +55℃, non‑condensing
Protection Class: IP20
Weight: 0.45kg
Mounting: Rack‑slot installation, match with TP853 baseplate
Compatible System: ABB AC800M DCS, System 800xA
Core Function: Operate as PROFIBUS‑DP master station, realize cyclic data exchange between AC800M controller and PROFIBUS‑DP slave equipment such as remote I/O and frequency converters.
Product Details
The CI854 3BSE025347R1 is practical PROFIBUS‑DP Master Module for ABB AC800M DCS platform, it is standard AC800M DP Fieldbus Interface Unit.
Working as PROFIBUS‑DP master station, this module connects to field slave devices via single D‑Sub bus port. It communicates with AC800M main CPU through CEX‑Bus backplane bus, completes real‑time transmission of process input and output data. It supports hot‑swap function, module can be replaced without powering off control rack, which reduces system maintenance downtime.
Front‑panel LED indicators display power status, CEX‑Bus link and PROFIBUS‑DP bus communication condition. Built‑in hardware self‑diagnosis can detect bus short‑circuit, communication interruption and internal hardware faults, fault alarm information will be uploaded to DCS operator workstation. Industrial‑grade circuit design satisfies strict EMC anti‑interference requirements of industrial cabinet environment.
It needs to cooperate with TP853 baseplate for rack‑slot installation. Widely applied in thermal power, petrochemical, pulp‑paper and metallurgy industries. It is key fieldbus communication hardware for PROFIBUS‑DP network construction, remote I/O access and defective CI854 communication module replacement for legacy AC800M automation projects.