Product Overview
When your Modicon M340 automation platform must survive dust, gas, salt, and humidity, standard networking hardware often fails first. The Schneider BMXNOE0100H solves that problem. It is an Ethernet TCP/IP network module built specifically for severe environments, featuring conformal coating and certifications for ATEX Zone 2/22 and IECEx Zone 2/22. This module keeps your control system communicating where ordinary modules cannot.
Key Technical Specifications
The BMXNOE0100H delivers 10/100 Mbit/s over a single RJ45 twisted pair connection. It operates as a Transparent Ready class B30 device, meaning it integrates directly into plant networks without complex gateways. Internal power comes from the rack, drawing only 90 mA at 24 V DC. That low current draw matters when you calculate total rack load.
A supplied Flash memory card (BMXRWSC016M) handles application saving and activates the standard web server. The module includes a RESET push-button for cold restart. Six LEDs give you instant status: green for ETH ACT, RUN, and ETH STS; red for ETH 100, CARD ERR, and ERR. The module weighs just 0.2 kg and uses a standard module format.
Environmental Durability
The operating temperature range spans -25 to 70 °C. Relative humidity from 10 to 95 percent without condensation is acceptable. The IP20 rating suits cabinet mounting. More importantly, the module resists gas class Gx (ISA S71.04), gas class 3C4, dust class 3S4, sand class 3S4, salt level 2, mold growth class 3B2, and fungal spores class 3B2. These characteristics make it a genuine severe-environment solution.
Industry Applications
Oil and Gas Processing
In Zone 2/22 hazardous areas, the BMXNOE0100H connects M340 racks to supervisory systems. The ATEX and IECEx certifications allow installation where standard modules are prohibited. Conformal coating protects against corrosive gases common in refineries.
Marine and Offshore
Merchant Navy certification and salt resistance level 2 make this module suitable for shipboard automation. The -25 °C cold-start capability supports deck-mounted cabinets in northern waters.
Water Treatment Plants
High humidity and condensation threaten electronics in treatment facilities. The 10 to 95 percent humidity tolerance without condensation, combined with mold and fungal resistance, keeps the BMXNOE0100H reliable in these damp environments.
Compatibility and Integration
The module supports Modbus TCP messaging, I/O scanning, Global Data exchange, and SNMP network administration. A configurable web server and FDR server simplify device replacement. Rack Viewer and bandwidth management help you monitor network health. The module works within the Modicon M340 platform and communicates with SCADA, HMI, and DCS systems over standard Ethernet TCP/IP.
Installation and Setup
Mount the BMXNOE0100H in any standard M340 rack slot. Power comes internally from the rack backplane, so no separate supply wiring is needed. Connect the RJ45 port to your network switch using a twisted pair cable. Insert the supplied Flash memory card before powering up. Use the RESET push-button only for cold restarts. Verify LED behavior after startup: green RUN and ETH STS indicate normal operation.
Maintenance and Reliability
Inspect the module periodically for LED fault indications. The CARD ERR LED signals memory card issues; check card seating if it illuminates. The ERR LED indicates processor or system faults. Because the module uses conformal coating, avoid abrasive cleaning that could damage the protective layer. Follow the manufacturer’s safety manual for all maintenance in hazardous areas. The wide temperature range and environmental resistances reduce failure rates, lowering total cost of ownership over the module’s service life.
Selection Guide
Before ordering the BMXNOE0100H, confirm your rack has available slots and your network uses Ethernet TCP/IP. Verify that your application requires ATEX Zone 2/22 or severe-environment protection. The module ships with a Flash memory card, so no separate memory purchase is needed. Contact SpareTechPLC for availability and to confirm this module matches your M340 configuration.
FAQs
What makes the BMXNOE0100H suitable for hazardous areas?
It holds ATEX Zone 2/22 and IECEx Zone 2/22 certifications, plus Class I Division 2 approval. Conformal coating adds further protection.
Does this module require an external power supply?
No. It draws 90 mA at 24 V DC internally from the M340 rack backplane.
What communication services does it support?
Modbus TCP messaging, I/O scanning, Global Data, SNMP, FDR server, and a configurable web server.
What is the operating temperature range?
From -25 °C to 70 °C, with 10 to 95 percent relative humidity without condensation.
Is a memory card included?
Yes, a Flash memory card (BMXRWSC016M) is supplied for application saving and web server activation.
