Ethernet-based Interfaces & Protocols

• 10/100/1000 Mbps industrial Ethernet ports with auto-negotiation and redundancy support (MRP, PRP/HSR)
• Full compliance with mainstream industrial protocols: PROFINET IO Controller/Device, Modbus TCP, OPC UA/DA, Ethernet/IP Adapter/Scanner
• Support for standard TCP/IP suite (TCP, UDP, ICMP, DHCP, DNS) for network management and data transmission
• HART IP protocol support for integrating smart field instruments into Ethernet networks
• BACnet IP protocol compatibility for building automation system integration

     Serial Communication

• Configurable RS-232/RS-485 serial ports (1–2 embedded ports, expandable up to 8 ports via modules)
• Support for Modbus RTU, ASCII, and custom serial protocols for legacy device connection
• Data transmission rates ranging from 300 bps to 115.2 kbps, with hardware flow control (RTS/CTS) support
• Isolated serial interfaces to enhance anti-interference capability in harsh industrial environments

     Interfaces for ABB Devices

• Native compatibility with ABB AC 800xA distributed control system for seamless integration into ABB's automation ecosystem
• Dedicated interfaces for ABB drives (ACS series), soft starters (PST series) and motor starters, enabling direct parameter configuration and control
• Support for ABB's proprietary communication protocols to ensure high-speed data exchange between AC 800M and ABB field devices
• Unified diagnostics and maintenance functions for ABB device networks, reducing system management complexity

     Interfaces for Legacy System Communication

• PROFIBUS DP/V1 master/slave expansion modules for connecting to legacy PROFIBUS-based automation systems
• Serial gateway modules to convert between serial protocols (RS-232/RS-485) and Ethernet protocols, enabling legacy device access via modern networks
• Support for DDE (Dynamic Data Exchange) and OPC DA for data integration with traditional SCADA systems

• Custom protocol development tools to meet the communication requirements of non-standard legacy equipment

AC 800M Communication interfacesCI853

CI853 RS-232 module protocols:

COMLI can be used on the built-in COM3 port and optionally on the CI853 ports. The cable length can be extended considerably (to several km) using a fiber optic converter. RS-232C is the standard communication interface used for serial communication with COMLI. The CI853 supports Hot Swap. COMLI is an ABB protocol for data transmission between controllers. It is designed for asynchronous master/slave communication in half-duplex. COMLI protocol supports dial-up modems controlled from the application. CI853 supports both Master/Slave modes in COMLI.

MODBUS RTU is a standard protocol widely spread because of its ease of use and reliability. Modbus RTU is an open, serial (RS-232 or RS-485) protocol derived from the Master/Slave architecture exchanging information in half duplex mode. The Modbus functionality can be configured both on the COM ports of AC 800M and CI853. Module Redundancy is not available in MODBUS RTU. CI853 supports only Master mode in MODBUS RTU.

AC 800M Communication interfacesCI854B

PROFIBUS DP is a high speed multipurpose bus protocol (up to 12Mbit/s) for interconnecting field devices, like remote I/O, drives, low voltage electrical equipment, and controllers. PROFIBUS DP can be connected to the AC 800M via the CI854B communication interface. The CI854B includes two PROFIBUS ports to realize line redundancy and it also supports PROFIBUS master redundancy.

Master redundancy is supported in PROFIBUS-DP communication by using two CI854B communication interface modules. The master redundancy can be combined with CPU redundancy and CEXbus redundancy (BC810). The modules are mounted on a DIN rail and interface directly with the S800 I/O system, and other I/O systems as well, including all PROFIBUS DP/DP-V1 and FOUNDATION Fieldbus proficient systems.

The PROFIBUS DP must be terminated at the two outermost nodes. This is usually done by using connectors with built-in termination. To guarantee a correct working termination the connector has to be plugged and power supplied.

Package including: a CI854BK01 Communication Interface and a TP854 Baseplate.

(Only compatible with System 800xA 6.0.3.2, Compact Control Builder 6.0.0-2 and onwards. Please see Product Update for more information.)

AC 800M Communication interfacesCI855

The MasterBus 300 (MB300) communication protocol used in communication between controllers, and operator stations in installations based on Advant OCS with Master software is also implemented in the System 800xA controller AC 800M. MB 300 communication is realized in AC 800M by communication interface CI855, which is connected to the CEX-Bus through a baseplate.

The baseplate, TP853, houses RJ45 connectors for two Ethernet ports, for network redundancy and provides a simple DIN-rail mounting.

A key benefit of the CI855 interface is the possibility of having peer-to-peer communication between new plant sections with System 800xA using the AC 800M controller and existing sections with MB 300-based controllers like Advant Controller 410, Advant Controller 450, and MasterPiece 200/1.

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