Schneider Electric BMENOC0321 Modicon M580 Ethernet Communication Module

Configured for Ethernet communication and IP forwarding in Modicon M580 PAC systems, the Schneider Electric BMENOC0321 (BMENOC0321 communication module) provides three Ethernet subnets through RJ45 interfaces.

Hardware Specifications

Ethernet Networking and IP Forwarding

The BMENOC0321 provides three Ethernet subnets with IP forwarding between configured network segments. The module integrates three RJ45 Ethernet connections supporting 10/100/1000 Mbps transmission.

Communication functions include Modbus TCP I/O scanning, Modbus TCP messaging, EtherNet/IP I/O scanning, and EtherNet/IP messaging. An embedded 4-port switch supports network interconnection, while RSTP provides Ethernet network topology management.

The module also supports bandwidth management, FDR server functions, configurable FactoryCast web services, and an advanced web server.

Frequently Asked Questions

Q: How is the BMENOC0321 powered within the Modicon M580 rack?
A: The module receives its power through the rack internal power supply and specifies 1800 mA at 3.3 VDC current consumption.

Q: Which Ethernet physical interfaces are provided?
A: The module provides three RJ45 Ethernet connections supporting 10/100/1000 Mbps transmission over double shielded twisted pair.

Q: Can the BMENOC0321 perform Ethernet network segmentation?
A: Yes. The module provides three Ethernet subnets with IP forwarding and supports RSTP and an embedded 4-port switch.

Field Installation Guidelines

Install the BMENOC0321 only in a compatible BMEXBP... Ethernet + X-bus rack and follow the rack manufacturer's installation sequence.

Verify that the rack power system can supply the module's specified 3.3 VDC current requirement before energization.

Use shielded Ethernet cabling where required by the installation environment, and maintain physical separation from high-voltage and high-current conductors.

Route Ethernet cables separately from motor, drive, contactor, and other high-noise wiring to reduce electromagnetic coupling.

Terminate cable shields according to the plant grounding design and applicable EMC installation practices.

After installation, inspect the RUN, ERR, ETH MS, ETH NS, ETH NS1, and ETH NS2 indicators to verify processor and network states.

Configure IP addressing, subnet relationships, IP forwarding, and communication services according to the M580 network architecture before placing the module into service.