Allen-Bradley ProSoft Communications Module MVI56E-MNET
The Allen-Bradley ProSoft Communications Module MVI56E-MNET is a robust, high-performance communication solution designed for integrating Modbus TCP/IP devices into Allen-Bradley ControlLogix and CompactLogix PLC systems. Manufactured by ProSoft Technology, this module provides seamless connectivity for systems that require reliable, real-time data exchange between Modbus-enabled devices and Rockwell Automation PLCs, ensuring high-speed communication in industrial automation environments.
The MVI56E-MNET is particularly beneficial in applications where Modbus networks need to be integrated with Allen-Bradley’s Logix platform, offering superior ease of use, scalability, and flexibility.

🔧 Key Features
🌐 Modbus TCP/IP Communication
The MVI56E-MNET is designed to facilitate the integration of Modbus TCP/IP networks into Allen-Bradley PLC systems, enabling seamless communication between Modbus devices such as sensors, actuators, and other PLCs. This module supports both Modbus Client (Master) and Modbus Server (Slave) configurations, making it highly versatile.
- Modbus TCP Master/Slave support for flexible network configurations
- Supports up to 50 Modbus TCP devices on the network
- High-speed communication with data transfer rates of up to 100 Mbps
- Real-time data exchange for precise control and monitoring
- Built-in Modbus diagnostics for simplified troubleshooting
🔄 Communication Flexibility
The MVI56E-MNET supports various communication parameters, providing flexibility for various industrial applications.
- Supports multiple Modbus function codes, including Read/Write Coils, Read/Write Holding Registers, and more
- Advanced protocol mapping, allowing for complex Modbus network configurations
- Ethernet connectivity through standard RJ45 port, ensuring quick and stable network integration
- Supports Modbus TCP/IP communication at both 10/100 Mbps speeds
🛠 Simple Integration with Allen-Bradley Systems
The MVI56E-MNET is part of the ProSoft Modular Communication family, designed to work seamlessly with Allen-Bradley ControlLogix and CompactLogix PLCs. It offers plug-and-play integration with these systems, making it easier to establish communication with Modbus devices.
- Easy installation and configuration within RSLogix 5000 and Studio 5000 environments
- Real-time data exchange with Allen-Bradley PLCs via Ethernet/IP or ControlNet
- User-friendly configuration via ProSoft’s Configuration Studio software
📈 Advanced Diagnostics and Monitoring
The MVI56E-MNET includes advanced diagnostics tools to monitor network status and performance. This ensures quick troubleshooting, minimizing downtime in mission-critical applications.
- Real-time diagnostics display of communication status, error codes, and network performance
- Comprehensive status indicators for the physical and network connections
- Logging features for capturing network errors and communication issues
🔐 Secure Data Communication
The module ensures that data is transferred securely and reliably across networks, using standard Modbus TCP/IP protocols that comply with industry security standards. Additionally, the Ethernet-based connection provides the benefits of high-speed communication and stable data transfer over large distances.
📝 Technical Specifications (Datasheet Summary)
| Parameter | Specification |
|---|---|
| Model | MVI56E-MNET |
| Form Factor | Modular (Fits in ControlLogix/CompactLogix Chassis) |
| Communication Protocol | Modbus TCP/IP (Master/Slave) |
| Ethernet Port | 1 x RJ45 (10/100 Mbps) |
| I/O Capacity | Supports up to 50 Modbus TCP Devices |
| Data Rate | Up to 100 Mbps |
| Diagnostic Features | LED Indicators, Error Logging |
| Power Supply | 5V DC (from ControlLogix chassis) |
| Operating Temperature | -25°C to +70°C (Operational) |
| Mounting | 1756-Series (ControlLogix/CompactLogix) |
| Software Configuration | ProSoft Configuration Studio |
| Dimensions | 4.75″ x 5.5″ x 1.2″ |
| Weight | 0.5 kg |
| Compliance | CE, UL, RoHS compliant |
🔌 Installation and Setup
- Mounting: The MVI56E-MNET module fits directly into an available slot in the Allen-Bradley ControlLogix or CompactLogix system chassis. Ensure that the slot is properly allocated, and the module is securely mounted.
- Power Supply: The module receives its power directly from the chassis (5V DC). Ensure that the power supply to the chassis is stable and within the operating range.
- Ethernet Connection: Connect the module to your Modbus TCP network via the RJ45 Ethernet port. Configure the network settings, including IP address, subnet mask, and gateway, through the ProSoft Configuration Studio software.
- Software Configuration:
- Use ProSoft Configuration Studio or RSLogix 5000/Studio 5000 to configure the MVI56E-MNET module.
- Define the Modbus TCP devices (Master or Slave) in your system and map the relevant Modbus registers to the PLC memory.
- Set up diagnostic features and test communications to ensure reliable connectivity.
🧰 Maintenance & Troubleshooting
- Diagnostic LEDs: The MVI56E-MNET features LED indicators that provide real-time feedback on module status, network activity, and error conditions.
- Software Tools: Use the ProSoft Configuration Studio to view detailed diagnostics, log network errors, and verify the Modbus communication settings.
- Firmware Updates: Periodically check for firmware updates from ProSoft Technology to ensure the module is running the latest version for improved performance and bug fixes.
- Cable and Connection Check: Ensure the Ethernet cables are securely connected, and inspect the network for any performance issues or physical damage to cables.
🌍 Applications
The MVI56E-MNET module is ideal for applications that require seamless communication between Modbus TCP/IP devices and Allen-Bradley PLC systems, including:
- Industrial Automation: Connecting various factory automation equipment such as sensors, actuators, and controllers to the PLC.
- Building Automation: Integrating HVAC, lighting, and security systems into a centralized control system.
- Energy Management: Data acquisition and control of energy meters and monitoring equipment.
- Process Control: Linking devices such as flow meters, pressure sensors, and temperature controllers to the main PLC system.
🔗 Product Recommendations
For other ProSoft communication solutions or alternative Modbus communication modules, consider the following:
| Product | Description | Link |
|---|---|---|
| ProSoft MVI56E-MCM | Modbus RTU Master/Slave Communication Module | ProSoft MVI56E-MCM |
| Schneider Electric Modicon M221 | Compact PLC with Modbus TCP communication | Schneider M221 |
| Beckhoff KL6xx0 Modbus I/O Modules | Modular I/O modules for Modbus integration | Beckhoff Modbus I/O |
| Siemens S7-1200 Modbus TCP Module | PLC with integrated Modbus TCP capabilities | Siemens S7-1200 |
| WAGO 750-352 Modbus TCP Gateway | Modbus TCP to serial gateway for communication | WAGO 750-352 |
✅ Conclusion
The Allen-Bradley ProSoft Communications Module MVI56E-MNET provides a seamless and efficient solution for integrating Modbus TCP/IP devices with Allen-Bradley ControlLogix and CompactLogix PLC systems. Its ease of use, high-speed communication capabilities, and flexibility in configuration make it a powerful choice for industrial automation, process control, and building automation systems.
By offering both Modbus Master and Slave configurations and comprehensive diagnostic features, this module ensures reliable, real-time communication between the PLC and Modbus devices, enhancing system efficiency and reducing downtime. Whether for new installations or retrofitting existing systems, the MVI56E-MNET provides the connectivity and control needed for modern automation applications.

