1. Basic Core Information
Official Full Name: AF100 Twisted Pair Fieldbus Interface Module
Platform: ABB System 800xA / AC 800M DCS Control System
Product Category: AF100 Twisted Pair Fieldbus Communication Interface Module
Standard Package: CI869K01 Main Module + TP869 Dedicated Mounting Base (cannot be used separately)
Net Weight: 0.6 kg
Purpose: Communication card specifically designed for connecting legacy ABB Advant systems to the AC800M controller side
2. Core Functional Capabilities
Utilizing ABB’s proprietary AF100 (Advant Fieldbus 100) network (twisted pair TWP medium), it enables three types of cross-device data exchange:
– AC 800M controller ↔ legacy AC160 controller systems (commonly used in upgrading old power plant or chemical industry Advant systems);
– Peer-to-peer data communication among multiple AC800M controllers;
– AC800M ↔ upper-level Connectivity Server gateway, enabling AC100 OPC data upload via CI527A network cards.
✅ Supports dual redundancy at both link and module levels, meeting the requirements for uninterrupted operation in process industries;
✅ Compatible with AC800M SIL3 high-integrity safety systems, suitable for interlock safety circuits in power plants;
✅ Rack supports hot-swapping, allowing modules to be replaced online without interrupting the entire control system operation.
Bus and Electrical Key Parameters
1. AF100 Bus Specifications
Transmission Rate: 1.5 Mbps
Transmission Medium: Shielded Twisted Pair (TWP)
Channels: Dual Independent Bus Terminal Channels (Redundant A/B Paths)
Topology: Bus Linear Topology. Terminal Matching Resistors must be installed at both ends of the bus.
2. Power Supply and Power Consumption
Power Supply Source: Power is taken from the backplane bus of the controller chassis (24VDC)
Overall Power Consumption: Typical 3W, Maximum 4.5W
Operating Current: Approximately 300mA
3. Environmental Tolerance Parameters
Operating Temperature: 0℃ ~ +60℃
Storage Temperature: -25℃ ~ +70℃
Humidity: 5% ~ 95% RH, No Condensation
Protection Grade: IP20 (Installation inside the cabinet)
Installation: 35mm Standard DIN Rail Rack Plug-in Installation
4. Hardware Internal Architecture
The module integrates three major units:
CEX Bus Logic Unit: Connects to the AC800M CPU Backplane for High-Speed Inter-Data Exchange;
Twisted Pair Modem: AF100 Bus Signal Encoding and Transmitting;
Isolated DC/DC Power Conversion Unit: Backplane Voltage Voltage Stabilization and Conversion for Power Supply
Panel Indicator Light Definitions (Core for Fault Troubleshooting)
Vertical Arrangement of LED Lights on the Panel:
PWR: Power Indicator Light (Always On = Normal Power Supply)
RUN: Module Operating Status (Flashes = Normal Operation)
FAULT: Module Fault Alarm (Red Light Always On / Flashes = Self-Check Exception, Communication Failure)
L1 / L2: Two AF100 Bus Channel Status Lights
Lifecycle (As of July 2026)
Original Factory Status: EOL Production Staged, Limited Production of Spare Parts Supply
AF100 Is a Private Field Bus of ABB in the Early Years. It has now been completely eliminated by Profinet, Ethernet TCP/IP New Generation Buses; ABB no longer produces new machines, only accepts maintenance and spare parts orders for old projects;
Supply Channel
New Original Import Inventory Pieces: Stock is scarce, price is high;
Disassembly, Maintenance, and Testing Pieces: Mainstream Maintenance Replacement Supply on the Market;
Version Compatibility
The entire hardware version of CI869 is compatible. 3BSE049110R1 is the final production stable version, and can be freely interchanged and replaced.
Typical Application Scenarios
Older ABB Advant System Upgrading Projects in the Fire Power, Hydropower, Papermaking, Chemical, and Metallurgical Industries, Interconnection of New and Old Generation DCS Systems, Data Interaction of Multiple Controller Clusters.
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