ABB CI856 Communication Interface Module

• 1. Product Overview

  The ABB CI856 Communication Interface Module is a high-performance communication module designed for ABB AC 800M controllers. It supports PROFIBUS DP and PROFIBUS PA protocols, enabling fast and reliable data exchange between the control system and distributed I/O stations, field devices, and intelligent instruments.

  The CI856 module is a key component for building robust industrial communication networks in process and factory automation systems.

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  2. Technical Specifications

  • Model: CI856

  • Product Type: Communication Interface Module

  • Compatible Controller: ABB AC 800M

  • Supported Protocols:

    • PROFIBUS DP

    • PROFIBUS PA

  • Communication Speed:

    • PROFIBUS DP: up to 12 Mbit/s

    • PROFIBUS PA: 31.25 kbit/s

  • Communication Interface: 9-pin D-Sub connector

  • Power Supply: Supplied via AC 800M system backplane

  • Mounting Method: Slot-mounted in AC 800M controller rack

  • Operating Temperature: 0 to +55 °C

  • Storage Temperature: -40 to +70 °C

  • Diagnostics:

    • Communication status monitoring

    • Bus fault detection

    • Slave device status monitoring

  • Redundancy Support: System-level redundancy (depending on system configuration)

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  3. Key Advantages and Features

  1. High Compatibility
     Fully compatible with ABB AC 800M systems, ensuring easy integration and scalability.

  2. Reliable Industrial Communication
     Supports PROFIBUS DP/PA for stable and high-speed communication in demanding industrial environments.

  3. Advanced Diagnostic Functions
     Built-in diagnostics simplify troubleshooting and reduce system downtime.

  4. Flexible System Integration
     Allows connection of various field devices, including remote I/O, transmitters, actuators, and smart instruments.

  5. Industrial-Grade Design
     Designed for long-term, stable operation in harsh industrial conditions with strong resistance to electromagnetic interference.

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  4. Typical Applications

  • Oil and Gas

  • Chemical and Petrochemical Industries

  • Power Generation and Energy

  • Water and Wastewater Treatment

  • Pharmaceutical and Food & Beverage Industries

  • Process Automation and Factory Automation

  • DCS and PLC Communication Networks

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  5. Installation and Usage Notes

  1. Verify module type and system compatibility before installation.

  2. Ensure correct PROFIBUS address configuration and use compliant shielded cables.

  3. Install or remove the module only when the system power is switched off.

  4. Make sure proper termination resistors are installed at both ends of the PROFIBUS network.

  5. Apply proper grounding and shielding in environments with high electromagnetic interference.

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The structure and details of the product：

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