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ABB CI858-1 3BSE018137R1｜Interface Module｜
Overview
The MasterBus 300 (MB 300) Main Station Communication Module serves as the primary communication interface for the MB 300 network. It enables direct connection between traditional ABB devices that use the MB 300 protocol—such as Advant Controller 410/450, MasterPiece 200/1 system operator stations (OS), and legacy I/O modules—and the AC 800M control system.
This ensures seamless data exchange between legacy and modern systems, such as:
Uploading process data from traditional devices to the AC 800M controller.
Transmitting control commands from AC 800M to legacy actuators.
Communication and Data Exchange
The module supports bidirectional data exchange and automatic protocol conversion between the internal PCI bus protocol of the AC 800M system and the MB 300 protocol.
It handles two primary data types:
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Real-time Control Data
Periodic transmission of analog values (e.g., temperature, pressure) and digital statuses (e.g., equipment start/stop signals).Ensures deterministic and real-time process control performance.
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Non-periodic Data
Transfers configuration parameters, diagnostic data, and maintenance information.Facilitates system maintenance, fault analysis, and parameter tuning.
Network Redundancy and Reliability
To ensure communication robustness, the module supports dual-link redundancy on the MB 300 network:
Two independent MB 300 bus connections can be configured.
Automatic switchover to the standby link occurs in case of a primary link failure, ensuring uninterrupted operation.
Built-in self-diagnostic functions continuously monitor bus communication quality (e.g., message error rate, link interruption alarms).
Diagnostic data can be accessed through ABB Control Builder M or the 800xA system, allowing rapid fault location and maintenance.
Hot-Plugging and System Compatibility
Supports hot-plugging, enabling module replacement without shutting down the controller power—minimizing system downtime.
Fully compatible with the entire AC 800M processor family (e.g., PM861, PM864).
Designed for installation on dedicated AC 800M motherboards, such as CI850 (single-slot) or CI851 (multi-slot), to integrate seamlessly with other communication and I/O modules.
2. Key Technical Parameters
| Category | Specification |
|---|---|
| Supported Protocol | MasterBus 300 (MB 300), compatible with Advant OCS/Master series communication standards |
| Communication Speed | Fixed at 10 Mbps (standard MB 300 rate), half-duplex mode |
| Communication Interface | 2 × RJ45 female connectors for MB 300 bus connection (supports redundant links, requires shielded twisted pair cables) |
| Power Supply | Provided via AC 800M motherboard (e.g., CI850/CI851); 5 V DC, typical consumption 1.2 A |
| Data Capacity | Supports up to 200 “Datasets,” each containing multiple I/O data points |
| Operating Temperature | 0 °C to +60 °C (industrial grade, non-condensing; complies with IEC 60068-2-1/2/14) |
| Storage Temperature | -40 °C to +85 °C |
| Protection Level | IP20 (must be installed in an enclosed control cabinet to prevent exposure to dust and liquids) |
| Certifications | CE (EU safety), UL 508 (industrial control equipment), optional ATEX (for hazardous area versions) |
ABB CI858-1 3BSE018137R1｜Interface Module｜
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By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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