Introduction
In the early 2000s, industrial networks were a patchwork of proprietary protocols. Engineers struggled to connect PLCs, drives, and HMIs from different vendors. Then Ethernet began its march to the factory floor. The Schneider BMXNOC0401 network module emerged as a bridge between traditional control and modern connectivity. It brings EtherNet/IP and Modbus/TCP to the Modicon M340 automation platform. This module lets you integrate your M340 rack into a plant-wide Ethernet backbone without complex gateways. For system integrators and maintenance teams, it simplifies data exchange and remote diagnostics.
Why Choose the BMXNOC0401?
The BMXNOC0401 is more than a communication card. It is a transparent-ready gateway that supports bandwidth management, an embedded 4-port switch, and RSTP for network redundancy. You get four RJ45 ports at 10/100 Mbit/s, so you can daisy-chain devices and reduce cabling costs. The module also includes an FDR server, SNMP administrator, and a standard web server. These features allow you to monitor network health and update configurations remotely. With CE, UL, CSA, and ATEX certifications, it fits both standard and hazardous locations. If you are upgrading an existing M340 system, this module is a drop-in solution that protects your investment.
Technical Specifications
The BMXNOC0401 operates on an internal power supply via the rack, drawing 555 mA at 3.3 V DC. It supports Modbus TCP I/O Scanner and Messaging, as well as EtherNet/IP I/O Scanner and Messaging. The embedded switch offers four RJ45 ports with 10BASE-T/100BASE-TX. Local signaling includes LEDs for RUN, ERR, ETH STS, MS, and NS. The module weighs 0.2 kg and operates from 0 to 60 °C with 10–95% relative humidity without condensation. It carries IP20 protection and meets EN/IEC 61131-2 and EN/IEC 61010-2-201 standards. Certifications include CE, UL, CSA, RCM, EAC, Merchant Navy, ATEX zone 2/22, and IECEx zone 2/22. It is also suitable for hazardous location class I division 2.
Applications
In automotive assembly lines, the BMXNOC0401 connects robot controllers and vision systems over EtherNet/IP. The 4-port switch reduces the need for external switches, saving panel space. In water treatment plants, Modbus/TCP allows seamless integration with SCADA systems. The module’s RSTP support ensures network recovery if a cable fails. For food and beverage plants, the IP20 rating and wide temperature range handle washdown areas when installed in appropriate enclosures. The ATEX and IECEx certifications make it viable for oil and gas applications in zone 2/22. Whether you are building a new M340 rack or expanding an existing one, this module delivers reliable Ethernet connectivity.
Installation and Setup
Mount the BMXNOC0401 in any available slot on the Modicon M340 rack. The module receives power from the backplane, so no external supply is needed. Connect your Ethernet cables to the four RJ45 ports. Use the embedded switch to create a linear or ring topology. For ring topology, enable RSTP in your configuration software. The module supports transparent-ready class B30, which simplifies integration with asset management tools. Configure the IP address using the web server or your PLC programming software. The LEDs help you verify power, network status, and module health. Always follow local electrical codes and the manufacturer’s installation guide.
Maintenance and Reliability
The BMXNOC0401 has no moving parts, so wear is minimal. Inspect the LEDs periodically to ensure normal operation. Check cable connections for tightness and signs of corrosion. Keep the cabinet clean and within the specified temperature and humidity range. The module’s SNMP support allows remote monitoring, so you can detect issues before they cause downtime. For hazardous areas, follow the ATEX and IECEx inspection schedules. With proper care, this module provides years of reliable service. SpareTechPLC stocks genuine Schneider modules and can help you plan replacements.
Compatibility and Integration
The BMXNOC0401 integrates seamlessly with the Modicon M340 platform. It communicates with any EtherNet/IP or Modbus/TCP compatible device, including PLCs, drives, and HMIs. The module also supports FDR server, which simplifies device replacement. You can use it with Schneider’s Unity Pro software for configuration. The embedded web server allows access from any standard browser. For network management, SNMP enables integration with popular NMS platforms. If you need to connect to a legacy system, the module’s transparent-ready concept ensures smooth data exchange.
Selection Guide
Before purchasing, verify that your M340 rack has an available slot and sufficient power budget. Check that your network uses EtherNet/IP or Modbus/TCP. Confirm the required certifications for your location. The BMXNOC0401 is a standard-format module, so it fits all M340 racks. If you need more ports, consider a managed switch. SpareTechPLC offers competitive pricing and fast shipping on the BMXNOC0401. Contact our team for compatibility questions or bulk orders.
FAQs
What protocols does the BMXNOC0401 support?
It supports EtherNet/IP and Modbus/TCP, along with bandwidth management, FDR server, and SNMP.
How many Ethernet ports does it have?
It has four RJ45 ports with 10/100 Mbit/s, configured as an embedded switch.
Can I use it in a hazardous area?
Yes, it is certified for ATEX zone 2/22 and IECEx zone 2/22, as well as class I division 2.
What is the power consumption?
The module draws 555 mA at 3.3 V DC from the rack backplane.
Does it support ring topology?
Yes, it supports RSTP for ring redundancy.
