Product Details

Modicon NW-BP85-002, also written as NWBP85002, is a high-performance modbus plus network bridge and reliable fieldbus router designed for legacy Modicon distributed automation systems including Quantum and Premium platforms. This network segment repeater features four independent Modbus Plus ports, used to partition, interconnect and extend separate Modbus Plus network segments. It routes peer-to-peer messages between network branches, isolates bus faults so that a failure on one segment will not crash the whole fieldbus, and expands the total number of supported nodes and maximum cable distance of the Modbus Plus network. It supports two power options: 115/230 VAC or 24 VDC, and provides front-panel LED indicators for power, port activity and fault diagnosis for fast on-site inspection. As a discontinued legacy spare, this modbus plus network bridge serves as a drop-in replacement to restore multi-segment fieldbus interconnection for ageing Modicon control systems.

Basic Parameters

Brand: Modicon (Schneider legacy)

Model: NW-BP85-002 / NWBP85002

Product Type: Modbus Plus 4-Port Network Bridge / Fieldbus Router

Compatible System: Modicon Quantum, Premium, 984 series Modbus Plus controllers

Network Ports: Four Modbus Plus fieldbus ports

Power Supply: 115 / 230 VAC or 24 VDC

Installation: Panel or shelf mounting

Indicator: Front LED for power, port traffic and fault status

Function: Segment routing, fault isolation, network extension

Product Status: Discontinued, end of lifecycle

Net Weight: Approximately 2.81 kg

Supported Functions

This modbus plus network bridge supports transparent peer message forwarding between different Modbus Plus network segments. The fieldbus router filters and routes Modbus Plus packets, isolates electrical faults and bus collisions to prevent fault propagation across branches. This network segment repeater supports configurable node routing rules, automatic message retry and built-in self-diagnosis for port disconnection, bus short circuit and configuration conflict. It can expand network coverage and increase the quantity of connected PLC, HMI and remote I/O nodes, maintaining stable real-time data exchange for distributed control. It retains routing configuration after power loss and resumes communication automatically once power is restored.

Core Functions

As a dedicated fieldbus router, this modbus plus network bridge links multiple Modbus Plus bus segments, manages cross-segment peer communication and acts as an isolation barrier to limit bus disturbances. It removes the restriction of single-segment node count and cable length for legacy Modbus Plus networks. This network segment repeater works as a direct spare to rebuild stable multi-branch Modbus Plus networking for ageing Modicon automation racks.

Hardware Specifications & Environmental Features

Operating Temperature: -10°C ~ +60°C

Storage Temperature: -20°C ~ +70°C

Relative Humidity: 5%–95%, non-condensing

Housing: Rugged metal enclosure with internal circuit shielding

Protection: Bus port transient surge suppression, internal watchdog monitoring

Anti-interference: Differential signal transmission for strong common-mode noise rejection

Compatibility: All standard Modbus Plus compatible Modicon controllers, remote I/O and operator panels

Industry Applications: Applied in legacy petrochemical distributed control, old paper making production automation, material handling conveyor lines, packaging and textile machinery, water treatment remote signal collection and large conveyor remote I/O control racks.

Note: Confirm Modbus Plus node addresses, segment topology and bus termination settings before ordering.

This is from our current stock.

available stock.xlsx