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Communication - AC 800M Controller Communication Interfaces
The AC 800M controller series is equipped with a diverse range of communication modules, enabling seamless connectivity to various field devices and third-party systems. The core interface categories are as follows:
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
Communications - AC 800M Communication interfaces
The AC 800M controller family includes a selection of communications modules that make it possible to access a wide range of field devices and third-party systems. The interfaces include:
• Ethernet-based interfaces/protocols
• Serial communications
• Interfaces to ABB equipment
• Communication interfaces to heritage systems
AC 800M Communication interfacesCI871A
The CI871A is an AC 800M communication interface that connects to the PROFINET IO devices through Ethernet. The TP867 Baseplate has two RJ45 Ethernet connectors, but only the CH1 connector that supports 100Mbps is used for PROFINET IO connection. The Ethernet cable must be connected to the PROFINET IO network through an Ethernet switch.
The CI871 expansion unit contains the CEX-Bus logic, a communication unit, and a DC/DC converter that supplies the required voltage from +24 V supply through the CEX-Bus.
The CI871A module will only work with System 800xA 6.0.3.3, 6.1.1 and subsequent versions

AC 800M Communication interfacesCI873A
The CI873A is an AC 800M communication interface that connects to external Ethernet devices using the EtherNet/IP protocol. The TP867 Baseplate has two RJ45 Ethernet connectors, but only the CH1 connector that supports 100Mbps is used. The CI873 expansion unit contains the CEX-Bus logic, a communication unit, and a DC/DC converter that supplies the required voltage from +24 V supply through the CEX-Bus.
The CI873A module will only work with System 800xA 6.0.3.3, 6.1.1 and subsequent versions. The CI873A support 6 redundant pairs of CI873A from 5.1 FP4.

AC 800M Communication interfacesCI874
The CI874 is an AC 800M communication interface that connects to external Ethernet devices using the OPC UA protocol. The TP867 Baseplate has one RJ45 Ethernet connector that supports 100Mbps. The CI874 expansion unit contains the CEX-Bus logic, a communication unit, and a DC/DC converter that supplies the required voltage from +24 V supply through the CEX-Bus.
CI874 is represented as a hardware module within the Control Builder hardware tree. The CI874 module will only work with System 800xA 6.1.1 and subsequent versions.

YMGK Purchase Information
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