1. Overview
The PROSOFT MVI56E-MNET is an enhanced communication module with Modbus TCP/IP client/server functionality, specifically designed for the Rockwell Automation ControlLogix platform. Developed by ProSoft Technology, it is engineered to enable seamless integration between ControlLogix systems and Modbus TCP/IP network devices. Supporting Ethernet communication, this module can operate as either a Modbus master or slave, making it ideal for industrial automation environments that demand efficient data exchange.
2. Specifications
The communication protocol of the module is Modbus TCP/IP. It is equipped with one Ethernet port that supports 10/100 Base-T transmission rates. The operating temperature range is from -40°C to +85°C, and the storage temperature range also spans -40°C to +85°C, ensuring stable performance in harsh industrial conditions. It has a memory capacity of 5,000 available 16-bit registers, which support custom data storage and processing. For power supply, the module requires 800 mA at 5VDC and 3 mA at 24VDC. Its compact dimensions measure 12.7 x 8.9 x 2.5 centimeters, facilitating easy installation in limited spaces.
3. Product Features
The module comes with enhanced functionality that goes beyond basic Modbus communication. It supports client/server operation modes, allowing the ControlLogix system to act as a Modbus master or client, and delivers faster data transmission speeds to meet high-efficiency industrial requirements. Some models, such as the MVI56E-MCM, offer multi-protocol compatibility, supporting protocols like DF1, ASCII, and DH-485, which makes the module adaptable to PLCs and controllers from different brands. Adopting a single-slot modular design, it simplifies hardware integration and wiring processes, reducing the complexity of system setup. When used in conjunction with ProSoft Configuration Builder (PCB) software, it enables easy management of module configuration files, along with support for firmware upgrades and custom configuration adjustments. Additionally, it supports data priority settings, which helps optimize communication performance and cut down on debugging time during system deployment.
4. Structure and Components
The core components of the module include an Ethernet port that serves as the connection interface for the Modbus TCP/IP network, enabling data transmission between the module and other network devices. The backplane interface is responsible for connecting to the ControlLogix processor’s backplane, fulfilling dual functions of power supply and signal transmission to ensure stable system operation. Internally, it is equipped with a programmable logic array (PLC) that features a configurable register bank (with a capacity of 5,000 words) for data storage and exchange. On the software side, it includes two key components: ProSoft Configuration Builder (PCB) for module configuration and ProSoft Discovery Service (PDS) for network device discovery. It is also fitted with indicator lights, typically including power, Ethernet connection, and communication status indicators, though the exact configuration may vary depending on the specific model.
5. Application Fields
In the manufacturing sector, the module facilitates data exchange between automated production lines and field devices, enhancing production efficiency and process control. In the oil and gas industry, it is used for remote data acquisition in oilfield monitoring systems, enabling real-time monitoring of field operations. For water treatment applications, it supports the integration of SCADA systems with field instruments, ensuring accurate data collection and process control for water treatment facilities. In the power industry, it enables remote monitoring and control of power equipment, contributing to the stable and reliable operation of power grids. In building automation, it facilitates communication between HVAC systems and upper-level computers, optimizing energy management and indoor environmental control in buildings.
6. Installation and Maintenance
Several key steps need to be followed during the installation and maintenance of the module. For hardware installation, reserve an empty slot in the ControlLogix system rack, insert the MVI56E-MNET module into the slot, and ensure a secure electrical connection with the backplane to avoid connection issues. For software configuration, use ProSoft Configuration Builder (PCB) to set module parameters, including IP address, communication format, starting address and count of read/write registers, to ensure the module operates in line with system requirements. The module supports firmware upgrades, and it is recommended to use the latest PCB version for updates to access new features and bug fixes. For fault diagnosis, use the module’s indicator lights (power and communication status) for initial troubleshooting, and perform network scanning and device identification using RSLinx or ProSoft Discovery Service to locate and resolve issues. As an industrial-grade module, it generally does not require special maintenance, but regular checks of the backplane connection status and heat dissipation conditions are recommended to ensure long-term stable operation.

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Frequently Asked Questions
Q1: What is the earliest delivery time you can offer?
A: We will arrange shipment immediately upon receipt of your payment.
Q2: Do you have any overseas branches?
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Q5: Can you provide data sheets/literature/technical documents?
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Our Services
Packaging and Shipping
We will arrange shipment within 3 working days after receiving your payment. All goods are strictly inspected before shipment to ensure product quality. Every product comes in a brand-new, original factory-sealed individual inner box. We can ship your order via major courier services including DHL, TNT, UPS, EMS and FedEx. Please contact us directly, and we will deliver the goods according to your specific requirements.
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