ABB CI858‑1 3BSE018137R1 Advanced Fieldbus Communication Interface Module

Technical Specifications

• Model: CI858‑1

• Part Number: 3BSE018137R1

• Brand: ABB

• Product Type: AFP fieldbus adapter communication module

• Fieldbus Protocol: ABB AFP bus

• Bus Port: D‑Sub 9‑pin AFP bus interface

• Backplane Bus: CEX‑Bus for AC800M controller

• Max Connection: Up to 8 S800 I/O stations per CI858‑1

• Transmission Distance: Max 600 meters depending on baud rate

• Feature: Support hot‑swap operation

• Power Supply: Powered by CEX‑Bus backplane bus

• Operating Temperature: 0℃ ~ +60℃

• Protection Class: IP20

• Weight: 0.42 kg

• Mounting: Rack slot installation

• Compatible System: ABB AC800M DCS System

• Core Function: Realize high‑speed data transmission between AC800M controller and S800 remote I/O stations via AFP fieldbus

Product Details

The CI858‑1 3BSE018137R1 is dedicated AFP Fieldbus Adapter Module for ABB AC800M DCS platform, it acts as core S800 I/O Bus Communication Unit for connecting S800 remote I/O stations.

This module adopts ABB proprietary AFP high‑speed fieldbus. It can connect up to 8 sets of S800 I/O stations, transmits large‑scale digital and analog signal data between controller and distributed I/O. It communicates with AC800M main processor through CEX‑Bus backplane bus, ensuring fast and deterministic I/O data refresh. Hot‑swap function supports module replacement without shutting down control rack, reducing system maintenance downtime.

Front‑panel LED indicators display module power status, CEX‑Bus operating state and AFP fieldbus link condition. Built‑in self‑diagnosis function detects bus interruption, short‑circuit and hardware abnormal status. Fault alarm information will be uploaded to DCS operator station. Industrial‑grade circuit design provides good anti‑interference performance for complex industrial control cabinet environment.

Standard rack‑slot mechanical structure, can be installed together with CPU and other communication modules in one controller rack. Widely used in thermal power, petrochemical, pulp‑paper and metallurgy industries. It is essential communication hardware for distributed I/O expansion, S800 system reconstruction and defective AFP adapter module replacement for legacy AC800M automation projects.