ProSoft MVI56-DFCMR DF1 Communication Interface Module – MVI56 Series for ControlLogix
When a ControlLogix-based control system loses its DF1 communication link, the consequences cascade instantly — PLCs go blind to field devices, SCADA systems lose real-time data, and production lines halt without warning. In high-stakes environments such as oil & gas pipelines, water treatment facilities, and automotive assembly lines, even minutes of unplanned downtime translate into tens of thousands of dollars in losses. The ProSoft MVI56-DFCMR is the purpose-engineered solution that eliminates this risk, providing a robust, deterministic DF1 serial communication bridge directly within the ControlLogix backplane.
The MVI56-DFCMR occupies a unique position within ProSoft Technology’s acclaimed MVI56 series — the industry’s most widely deployed third-party communication module platform for Rockwell Automation ControlLogix systems. Designed to handle DF1 full-duplex and half-duplex (master/slave) protocols with configurable multi-port serial interfaces, this module is trusted by system integrators and OEMs across more than 80 countries. Its seamless backplane integration, deterministic data exchange, and field-proven reliability make it a cornerstone component in legacy system modernization and new greenfield automation projects alike.
Technical Specifications
- Model Number: MVI56-DFCMR
- Manufacturer: ProSoft Technology
- Series: MVI56 (ControlLogix Platform)
- Protocol: DF1 Full-Duplex & Half-Duplex (Master/Slave)
- Backplane Interface: Rockwell Automation ControlLogix 1756 backplane
- Serial Ports: 2 configurable RS-232/RS-422/RS-485 ports
- Communication Mode: Master, Slave, or Peer-to-Peer
- Data Buffer: Internal module memory for asynchronous data exchange
- Power Supply: Supplied via ControlLogix backplane (no external power required)
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Weight: 230 g
- Certifications: CE, UL (refer to ProSoft datasheet for full compliance list)
- Form Factor: Single-slot ControlLogix module
Key Features & Benefits
- Native ControlLogix Backplane Integration: Communicates directly via the 1756 backplane — no gateway hardware, no additional wiring complexity.
- Dual Serial Port Flexibility: Two independently configurable ports support RS-232, RS-422, and RS-485 — enabling simultaneous master and slave operation.
- DF1 Full-Duplex & Half-Duplex Support: Handles both point-to-point and multi-drop network topologies, critical for legacy Allen-Bradley device integration.
- Deterministic Data Exchange: Ladder logic-driven data transfer ensures predictable, scan-cycle-synchronized communication with the ControlLogix processor.
- Configurable via ProSoft Configuration Builder (PCB): Free software tool simplifies setup, diagnostics, and firmware updates without specialized hardware.
- Robust Error Handling: Built-in diagnostics and error reporting registers allow real-time fault detection from within the PLC program.
- Legacy System Bridge: Ideal for connecting older Allen-Bradley SLC 500, MicroLogix, and PLC-5 devices to modern ControlLogix architectures.
- Global Compliance: CE and UL certified for deployment in international industrial environments.
Industry & Equipment Applications
- Oil & Gas: Pipeline SCADA systems, wellhead controllers, remote terminal unit (RTU) integration
- Water & Wastewater: Pump station control, treatment plant automation, telemetry networks
- Automotive Manufacturing: Assembly line PLCs, robotic cell controllers, legacy device migration
- Power Generation & Utilities: Substation automation, generator control, energy management systems
- Food & Beverage: Batch processing, conveyor control, legacy HMI/SCADA connectivity
- Mining & Metals: Conveyor systems, crusher control, remote monitoring stations
- Building Automation: HVAC control integration, BMS gateway applications
System Integration & Compatible Parts
The MVI56-DFCMR is designed for seamless integration within the Rockwell Automation ControlLogix ecosystem. Compatible and commonly paired components include:
- ControlLogix Chassis: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
- ControlLogix Power Supplies: 1756-PA72, 1756-PB72, 1756-PA75
- ControlLogix Processors: 1756-L61, 1756-L62, 1756-L63, 1756-L71, 1756-L72, 1756-L73
- Related ProSoft MVI56 Modules: MVI56-MCM, MVI56-MNET, MVI56-PDPMV1, MVI56-101S
- Software: ProSoft Configuration Builder (PCB) — free download from ProSoft Technology
- Legacy Devices: Allen-Bradley SLC 500 series, MicroLogix 1000/1100/1400, PLC-5 family
Our Quality Assurance Process
At Konmask.com, every ProSoft MVI56-DFCMR module undergoes a rigorous multi-stage verification process before shipment:
- Authenticity Verification: Each unit is cross-referenced against manufacturer records and inspected for genuine ProSoft Technology labeling, holographic seals, and date codes.
- Functional Pre-Inspection: Visual inspection for physical integrity — connector pins, housing, PCB condition, and firmware label accuracy.
- Traceability Documentation: Full supply chain traceability records available upon request for regulated industries.
- Secure Packaging: Anti-static ESD packaging with shock-absorbing foam inserts, ensuring safe transit for sensitive electronics.
- Warranty Support: All units supplied with Konmask.com’s quality guarantee. Defective units are replaced or refunded per our returns policy.
How to Order
- Submit an Inquiry: Use the contact form or email support@konmask.com with your required quantity and delivery timeline.
- Receive a Quote: Our technical sales team will respond within 1 business day with pricing, lead time, and availability confirmation.
- Order Confirmation: Approve the proforma invoice and confirm your shipping address and preferred freight method.
- Shipment & Tracking: We ship via DHL, FedEx, UPS, and TNT with full tracking. Express delivery available for urgent requirements.
- After-Sales Support: Our engineering team is available post-delivery for integration guidance and technical questions.
Why Choose Konmask.com?
- ✅ Specialized B2B Industrial Supplier — focused exclusively on automation and control system components
- ✅ Global Stock Access — sourcing from verified distributor networks across North America, Europe, and Asia
- ✅ Technical Expertise — our team includes qualified automation engineers who understand your application
- ✅ Fast Response — quotes within 24 hours, express shipping available worldwide
- ✅ Competitive Pricing — volume discounts available for OEM and system integrator customers
- ✅ Trusted by Engineers Globally — serving clients in manufacturing, energy, infrastructure, and process industries
Frequently Asked Questions
Q: What is the ProSoft MVI56-DFCMR used for?
A: The MVI56-DFCMR is a DF1 communication interface module for Rockwell Automation ControlLogix systems. It enables ControlLogix PLCs to communicate with devices using the Allen-Bradley DF1 serial protocol, including legacy SLC 500, MicroLogix, and PLC-5 equipment.
Q: Is the MVI56-DFCMR compatible with all ControlLogix chassis?
A: Yes. The MVI56-DFCMR fits any standard 1756 ControlLogix chassis (1756-A4 through 1756-A17) and is compatible with all ControlLogix processors running RSLogix 5000 / Studio 5000 software.
Q: Does the MVI56-DFCMR support both master and slave modes?
A: Yes. Each of the two serial ports can be independently configured as DF1 master, slave, or peer-to-peer, providing maximum flexibility for complex network topologies.
Q: What software is required to configure the MVI56-DFCMR?
A: Configuration is performed using ProSoft Configuration Builder (PCB), a free utility available from ProSoft Technology’s website. Sample ladder logic and Add-On Instructions (AOI) are also provided.
Q: Can Konmask.com provide the MVI56-DFCMR with short lead times?
A: Yes. We maintain access to global distributor stock and can typically confirm availability within 24 hours. Express air freight is available for urgent project requirements.
Q: Is the MVI56-DFCMR a new or refurbished unit?
A: Please specify your requirement when submitting an inquiry. We can source new (factory-sealed), surplus new (unused), and professionally refurbished units depending on availability and your budget.
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