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AEG MODICON NW-BM85-000 bridge multiplexer

AEG MODICON NW-BM85-000 bridge multiplexer

Product manual:

NW-BM85-000 is a crucial bridge type multiplexer in Modicon's early distributed I/O system,
Used to establish a stable data transmission link between the main controller, expansion rack, and remote I/O station.
Its design goal is to make the wiring of large-scale automation systems more flexible, communication more reliable, and support multi node communication in complex factory environments.

core function

Communication bridging: Bridge the data bus of one rack to another rack, allowing multiple sites or remote I/O to be uniformly controlled by the master station.

Multiplexing: Integrating multiple data channels into one main communication line, reducing the number of wiring and improving bus utilization.

Signal stabilization: Buffer and condition the transmitted data to ensure communication integrity even over long distances or complex environments.

System expansion point: Supports traditional 800/984 architecture expansion, which is very commonly used in the renovation and expansion of old systems.

Structural characteristics and working mechanism

Adopting backplane communication to maintain real-time data exchange with the controller CPU and I/O modules.

High stability, suitable for high interference and long line environments, such as chemical plants, power plants, refineries, old production lines, and other scenarios.

Typical Applications

Expand multiple I/O racks and maintain unified control.

Connect the remote control cabinet to the main PLC system.

The collection of sensors/actuators arranged in zones in large factories.

Expansion or renovation project of the original Modicon system.

Scenarios that require data transmission across rooms and floors.

Advantages and Features

High reliability, suitable for continuous operation in industrial environments.

The deployment method is flexible, making it easy to expand complex control systems.

Good compatibility, seamlessly compatible with Modicon's original PLC system.

Easy to maintain, often used for extending the lifespan and upgrading projects of old systems.

Strong adaptability to communication distance and environmental interference.