PROSOFT 202-DFNT-MCM4 – EtherNet/IP (DFNT) to 4‑Port Modbus Serial Gateway for Mixed PLC/Field Integration

The PROSOFT 202-DFNT-MCM4 is a compact gateway that links EtherNet/IP (DFNT) controllers to multiple Modbus serial devices. From my experience, it’s a practical way to bridge Rockwell/other EtherNet/IP hosts to legacy drives, meters, flow computers, and MCCs that speak Modbus RTU/ASCII. You might notice the “MCM4” suffix—this version provides up to four independent serial channels, which typically cuts cabinet count and wiring compared to using separate single‑port converters.

Company’s Order Placement Process and Guarantees

• The warranty period is 365 days
• Delivery time: 1 week for in‑stock; no more than one month at the latest
• Payment method: 50% advance payment, full payment for delivery
• Express delivery methods: FedEx, UPS, DHL
• Pre‑shipment checks: label/port inspection and basic power‑on diagnostics; ESD‑safe, shock‑resistant packing

Key Features

• EtherNet/IP (DFNT) client/server – Exchanges data with EtherNet/IP PLCs and SCADA systems using a mapped data model.
• Four Modbus serial ports – Each port is typically configurable for RS‑232/422/485 and RTU/ASCII, Master or Slave, to cover mixed field devices.
• High command throughput – Per‑port polling lists let you optimize scan time to critical instruments while keeping the PLC tag map simple.
• Compact DIN‑rail form factor – Saves panel space versus multiple single‑protocol converters.
• Maintenance‑friendly – Front status LEDs and message counters (via the configuration utility) make troubleshooting quicker.
• Flexible data mapping – Map Modbus registers and coils to EtherNet/IP tags for clean PLC integration.

Technical Specifications

Application Fields

Typical scenarios where this gateway earns its keep:

• Rockwell EtherNet/IP PLCs polling Modbus instruments (drives, power meters, analyzers) in existing panels.
• Bridging MCC buckets and VFD networks on Modbus RTU to plant EtherNet/IP control systems.
• Flow/energy skids with mixed Modbus vendors consolidated into one PLC tag map.
• Brownfield retrofits where adding four serial channels in one box reduces cabinet rework.

A controls tech put it plainly: “We mapped the Modbus registers once, pointed the EtherNet/IP tags at the data table, and all four ports started serving data in a single scan.” That’s been fairly typical when the polling lists are tuned sensibly.

Advantages & Value

• Reliability – Solid 24/7 operation; message counters and LEDs help spot line issues fast.
• Compatibility – Talks DFNT on one side and Modbus RTU/ASCII on the other; suits mixed vendor sites.
• Cost savings – One 4‑port unit often replaces multiple converters and spare SKUs.
• Scalability – Per‑port master/slave flexibility lets you adapt to oddball vendor requirements.
• Support – We can assist with data map planning and basic serial/Ethernet best practices before your window.

Installation & Maintenance

• Power & panel: 24 V DC supply; mount on DIN rail in a ventilated enclosure; keep ambient typically 0…60 °C.
• Ethernet: Use shielded CAT5e/6; segregate from VFD motor leads; bond shield to panel ground.
• Serial lines: For RS‑485, use twisted shielded pair; observe termination and biasing; keep drops short.
• Configuration: Define polling lists/data map in the PC utility; validate with a Modbus tester and PLC watch tags.
• Diagnostics: Check port LEDs and message counters for timeouts; adjust scan pacing to avoid device overrun.
• Routine care: Periodic terminal re‑torque, dust cleaning, and saving a copy of the configuration file with the panel docs.

Quality & Certifications

• Manufactured to industrial quality systems, typically aligned with ISO 9001.
• CE marking for EMC on relevant variants; many models are UL/cUL Recognized.
• RoHS compliance by series generation; verification by part/serial available.
• Warranty: 365 days repair/replace coverage from delivery.