ProSoft MVI69-DFNT – EtherNet/IP (DF1/PCCC over Ethernet) Communication Module for 1769 CompactLogix

The ProSoft Technology MVI69-DFNT drops into a 1769 CompactLogix I/O rack and gives your controller a native way to exchange data with Allen‑Bradley devices speaking DF1/PCCC over Ethernet (often called “DFNT”). From my experience, it’s a clean option when you need your CompactLogix to poll SLC™ 5/05, PLC‑5® Ethernet, older PanelView® terminals, or MicroLogix™ with Ethernet—without juggling separate gateways. You might notice that it behaves like a dedicated EtherNet/IP Client/Server engine living in the 1769 slot, mapping data straight into controller tags through the supplied Add‑On Instruction.

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Key Features

• 1769 CompactLogix integration – Installs as a standard 1769 single‑slot module; data appears in controller tags via the included AOI, which keeps the ladder logic simple.
• EtherNet/IP Client/Server (DFNT) – Communicates using DF1/PCCC encapsulation over Ethernet for SLC 5/05, PLC‑5 Ethernet, Ethernet‑based PanelView, and many MicroLogix models.
• 10/100Base‑TX Ethernet – Standard RJ45 copper port for quick hookup to plant networks; typically works well with managed or unmanaged switches.
• Deterministic data mapping – From my experience, the module’s internal database maps cleanly to Logix tags, so HMI/PLC data exchange stays consistent during runtime.
• ProSoft Configuration Builder (PCB) – PC‑based configuration utility; you can define devices, transactions, and diagnostics in minutes.
• Industrial operating range – Designed for control cabinets; in many cases it runs reliably across typical plant floor temperatures.
• Diagnostics that help – You might notice the status and comms counters make troubleshooting straightforward when you’re bringing a legacy cell back online.

Typical Use Cases

• Link a CompactLogix line controller to an SLC 5/05 utilities PLC to exchange status words and recipe data over Ethernet.
• Read/write integer files in a PLC‑5 controlling a batching skid while modernizing the main DCS to CompactLogix.
• Serve tag data to an older PanelView Standard Ethernet HMI without rewriting the whole HMI project.

Technical Specifications

Related or Supporting Products

• MVI69-MNET – For Modbus TCP communications from CompactLogix; choose this when you’re targeting drives, power meters, or PLCs using Modbus TCP.
• MVI69-MCM – Serial Modbus (RTU/ASCII) Master/Slave; typically used for legacy serial instruments and weigh scales.
• MVI56E-DFNT – ControlLogix version of the DFNT module; same concept for 1756 platforms if you’re standardizing across chassis sizes.
• PLX51-DF1-ENI – Compact gateway for DF1 Serial to EtherNet/IP; a good fit when you need DF1 serial rather than DF1/PCCC over Ethernet.
• 1769-PA/PD Power Supply & 1769 End Cap – Required hardware for any 1769 I/O bank hosting the MVI69‑DFNT.
• Industrial Ethernet accessories – Shielded RJ45 patch cables, DIN‑rail switches (managed with IGMP snooping recommended on larger EtherNet/IP networks).

Installation & Maintenance

• Cabinet & mounting – Install in a clean, dry enclosure. Follow 1769 spacing and grounding practices. Keep low‑voltage signal wiring away from high‑noise conductors.
• Ventilation – Provide adequate airflow; from my experience, modules run cooler with a small panel fan when ambient approaches 50–60 °C.
• Networking – Use shielded Cat5e/6 cables. Managed switches with storm control and IGMP snooping typically improve EtherNet/IP performance on busy plants.
• Wiring & ESD – De‑energize the rack before adding/removing modules. Observe ESD precautions when handling the 1769 assembly and connectors.
• Configuration – Set up devices and transactions in ProSoft Configuration Builder, then import the AOI and map tags. Test communications with a single peer first before scaling.
• Routine maintenance – Periodically back up PCB projects and Logix programs, check connector tightness, clean dust with dry air, and apply firmware updates when released.

Quality & Certifications

• CE and RoHS compliant; UL/cUL listings are commonly available for ProSoft 1769 modules (including use in industrial control panels).
• Manufacturer warranty: typically 1 year standard from ProSoft Technology.
• Each unit is functionally tested before shipment in most cases; serialized records aid traceability.