Products Description
ABB CI871 3BSE056767R1 PROFINET IO Communication Interface Module

Technical Specifications
Model: CI871
Part Number: 3BSE056767R1
Brand: ABB
Product Type: PROFINET‑IO communication interface module
Matching System: ABB AC800M Controller, 800xA DCS System
Power Supply: Rack backplane 24VDC
Communication Interface: Dual PROFINET‑IO Ethernet ports
Transmission Rate: 10/100 Mbps auto‑negotiation
Protocol: PROFINET‑IO RT real‑time protocol
Installation Method: Rack slot mounting, hot‑swap supported
Operating Temperature: 0℃ ~ +60℃, non‑condensing
Protection Class: IP20
Weight: 0.26kg
Dimension: 74mm ×88mm ×33mm
Compatible System: Power plant DCS, petrochemical, manufacturing process control cabinet
Core Function: PROFINET‑IO dedicated communication module for AC800M DCS system. Realizes real‑time data exchange between DCS controller and PROFINET‑IO field devices, supports dual‑port link redundancy, completes I/O data reading & writing and protocol processing, guarantees stable real‑time communication of industrial control network.

Product Details
The CI871 3BSE056767R1 is PROFINET‑IO communication interface module for ABB AC800M and 800xA DCS control system.
This module connects to AC800M backplane bus, adopts dual‑port PROFINET‑IO design, supports RT real‑time communication, and can connect various PROFINET‑IO slave devices such as remote I/O, drives and field instruments. Dual‑channel link redundancy improves network anti‑fault capability.
Hot‑swap function allows online module replacement without system shutdown. Front‑panel LED indicators clearly display power status, network link and fault alarm information. Built‑in communication diagnosis function can detect network interruption, slave station failure and data transmission error, and feed back fault information to DCS controller.
Compact size saves cabinet space. Conformal coated circuit board enhances anti‑interference performance, adapts to harsh industrial site electromagnetic environment.
Widely used in DCS renovation and maintenance projects of power, petrochemical and process manufacturing industries.
It is important spare hardware for PROFINET‑IO network debugging and defective CI871 module replacement.