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- BMXNOC0401
- Ethernet Communication Module
- France
- 55 × 110 × 120 mm
- 0.2 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Schneider BMXNOC0401 Modicon M340 Ethernet Communication Module is a communication module used to connect a Modicon M340 automation system with Ethernet-based industrial networks. It handles network communication between the M340 controller environment and connected Ethernet devices, allowing control data and diagnostic information to move between the automation system and other network nodes.
In a typical M340 installation, the BMXNOC0401 is positioned at the communication layer rather than the field I/O layer. The PLC continues to execute the application program and control logic, while the Ethernet communication module manages the exchange of information with networked equipment.
The module is suited to machine and process automation systems where PLC data must be exchanged with Ethernet devices such as remote equipment, supervisory systems, operator interfaces, or other controllers. It can also simplify the integration of Ethernet communication into an existing M340 control architecture.
For commissioning and maintenance, communication status can be evaluated separately from the PLC application itself. Checking the module, Ethernet connection, network configuration, and connected device helps isolate communication problems without immediately assuming a controller or I/O fault.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | BMXNOC0401 |
| Product Family | Modicon M340 |
| Product Type | Ethernet Communication Module |
| Primary Function | Ethernet-based industrial communication |
| System Role | PLC communication interface |
| Typical Application | Industrial automation and Ethernet networking |
| Dimensions | 55 × 110 × 120 mm |
| Weight | 0.2 kg |
Product Features
- Ethernet communication interface for Modicon M340 systems
- Supports network communication between the M340 platform and Ethernet devices
- Operates at the communication layer of the PLC architecture
- Suitable for distributed industrial automation networks
- Supports data exchange between controllers and networked equipment
- Useful for integrating supervisory and operator-level systems
- Provides a dedicated communication interface within an M340 control system
- Suitable for commissioning, diagnostics, and maintenance of Ethernet-connected automation equipment
Working Principle
The BMXNOC0401 exchanges data between the Modicon M340 control system and connected Ethernet network devices. Data generated or required by the PLC application is passed through the communication module to the appropriate network interface, while incoming Ethernet data is transferred toward the M340 system for processing by the control application.
The module handles communication functions without taking over the PLC’s application logic. The controller remains responsible for executing the machine or process program, while the communication module establishes the path through which network data reaches the controller environment.
Modicon M340 PLC → BMXNOC0401 → Ethernet Network → Remote Device / Supervisory System
During troubleshooting, communication faults can be separated into several areas: module status, Ethernet connection, network configuration, remote device availability, and PLC application data. This makes the communication module a practical diagnostic point when networked equipment stops exchanging expected information.
Role in a Modicon M340 Ethernet Control Architecture
The BMXNOC0401 forms part of the Ethernet communication layer of a Modicon M340 automation system. It connects the controller environment to external Ethernet equipment while leaving application sequencing and machine-control decisions to the PLC.
M340 Controller → BMXNOC0401 Ethernet Communication Module → Ethernet Network → HMI / SCADA / Remote Equipment / Other Network Nodes
| System Element | Function |
|---|---|
| Modicon M340 PLC | Executes application and machine-control logic |
| BMXNOC0401 | Provides Ethernet communication for the M340 system |
| Ethernet Network | Transfers data between connected automation devices |
| HMI | Provides operator monitoring and control |
| SCADA / Supervisory System | Collects and presents process information |
| Remote Automation Equipment | Exchanges control and process data over Ethernet |
| Engineering Station | Supports configuration, programming, and diagnostics |
Industrial Applications
| Application | Typical Use |
|---|---|
| Machine Automation | Ethernet communication between PLC and machine equipment |
| Process Automation | Networked exchange of process and control information |
| Production Lines | Communication between controllers and production equipment |
| Material Handling | Data exchange with conveyors and distributed equipment |
| Packaging Machinery | PLC communication with operator and auxiliary systems |
| Manufacturing Networks | Integration of M340 controllers into Ethernet networks |
| HMI / SCADA Integration | Transfer of PLC data to supervisory systems |
| Distributed Control Panels | Ethernet communication between separated control stations |
Installation and Maintenance
- Confirm that the BMXNOC0401 is suitable for the intended Modicon M340 communication architecture.
- Install the module in the appropriate M340 rack position according to the system configuration.
- Verify the Ethernet network connection before applying or restoring control power.
- Inspect Ethernet connectors and cables for damage or poor termination.
- Confirm that the module is correctly seated and secured in the rack.
- Check the network configuration and addressing used by the application.
- Verify that connected Ethernet devices are powered and available on the network.
- Check communication indicators and module status during commissioning.
- Test data exchange between the M340 controller and the connected network device.
- Investigate intermittent communication by checking cables, connectors, network equipment, and configuration.
- Back up the existing communication configuration before replacing the module where applicable.
- After replacement, verify network communication and application-level data exchange before returning the control system to normal operation.
Compatible System Components
| Component | Function |
|---|---|
| Modicon M340 CPU | Executes PLC application and control logic |
| BMXNOC0401 | Provides Ethernet communication interface |
| Modicon M340 Rack | Provides the physical PLC module installation platform |
| Ethernet Switch | Connects multiple Ethernet network devices |
| HMI Terminal | Provides operator visualization and control |
| SCADA System | Provides supervisory monitoring and data collection |
| Engineering PC | Supports PLC configuration and diagnostics |
| Ethernet Network Cable | Provides the physical network communication path |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Schneider Modicon M340 | PLC Platform | Machine and process automation |
| Schneider BMXP34 Series | M340 Processor | PLC control and application execution |
| Schneider BMXNOE Series | Ethernet Communication Module | M340 Ethernet networking |
| Schneider BMXNOC Series | Ethernet Communication Module | M340 network communication |
| Schneider BMXRMS Series | M340 Communication / Network | Industrial network integration |
| Schneider Modicon X80 | I/O and Communication Platform | Distributed automation infrastructure |
| Schneider Ethernet Switches | Industrial Network Equipment | Network connectivity |
Key Advantages
- Provides a dedicated Ethernet communication interface for Modicon M340 systems
- Connects M340 controllers with networked industrial equipment
- Separates network communication functions from PLC application logic
- Supports integration with HMI, supervisory, and distributed automation systems
- Simplifies communication troubleshooting by providing a dedicated network interface
- Suitable for machine and process automation architectures using Ethernet connectivity
Technical FAQs
What role does the BMXNOC0401 perform in a Modicon M340 system?
The BMXNOC0401 provides Ethernet communication between the Modicon M340 control environment and compatible networked devices. It handles communication functions while the M340 CPU remains responsible for the PLC application logic.
What should be checked when an M340 system loses Ethernet communication?
Check the BMXNOC0401 status, Ethernet cable and connectors, network equipment, addressing and configuration, and the availability of the remote device. Comparing module status with the expected application communication can help determine where the fault originates.
Can the BMXNOC0401 replace the M340 CPU?
No. The BMXNOC0401 is a communication module rather than a PLC processor. The CPU executes the control program, while the communication module provides the Ethernet communication path.
How does the BMXNOC0401 fit into an existing M340 network?
The module is installed as part of the M340 control architecture and provides the Ethernet interface used to exchange information with external network devices. Its integration depends on the network topology, addressing, communication configuration, and connected equipment.