Modbus TCP/IP Industrial Automation Solution – ProSoft Technology MVI71-MNET | MVI71 Series
Where This Product Is Used
The ProSoft Technology MVI71-MNET is purpose-built for industrial environments where Allen-Bradley PLC-5 controllers must communicate over Ethernet-based Modbus TCP/IP networks. Engineers deploy this module across a wide range of critical applications:
- SCADA & DCS Integration: Bridges PLC-5 backplane data to supervisory control systems (Wonderware, Ignition, iFIX) via Modbus TCP/IP, enabling real-time process visibility in oil & gas, water treatment, and power generation plants.
- Factory Automation & MES Connectivity: Connects legacy PLC-5 controllers to modern Manufacturing Execution Systems (MES) and historian databases without costly controller replacement.
- Energy Management Systems: Used in substations and utility facilities to poll energy meters, RTUs, and IEDs that speak Modbus TCP/IP, aggregating data into the PLC-5 for alarming and control.
- Building Automation (BAS/BMS): Integrates HVAC controllers, chillers, and power distribution units into centralized building management platforms.
- Pharmaceutical & Food Processing: Provides validated, deterministic communication between PLC-5 batch controllers and Modbus-enabled instrumentation (flow meters, temperature transmitters, analyzers).
- Mining & Metals: Deployed in conveyor control, crusher automation, and pump station monitoring where PLC-5 systems remain the installed base.
Technical Specifications
| Part Number | MVI71-MNET |
| Manufacturer | ProSoft Technology |
| Series | MVI71 (Allen-Bradley PLC-5 Compatible) |
| Protocol | Modbus TCP/IP (Client & Server) |
| Network Interface | 10/100 Mbps Ethernet (RJ-45) |
| Backplane Interface | Allen-Bradley PLC-5 I/O chassis (1771 backplane) |
| Max Connections | Up to 4 simultaneous Modbus TCP/IP client/server sessions |
| Data Transfer | Up to 5,000 registers (read/write) per scan |
| Configuration | ProSoft Configuration Builder (PCB) software |
| Power Consumption | 800 mA @ 5 VDC (from backplane) |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5% to 95% non-condensing |
| Weight | 230 g |
| Certifications | CE, UL Listed, RoHS Compliant |
| Dimensions | Single-slot 1771 I/O module form factor |
Why Engineers Specify This Model
- Proven PLC-5 Backplane Integration: Communicates natively over the 1771 backplane — no gateway hardware, no additional power supply, no rack modifications required.
- Dual-Role Client & Server: The MVI71-MNET can simultaneously act as a Modbus TCP/IP client (polling remote devices) and server (responding to SCADA queries), reducing module count and panel space.
- Deterministic Data Exchange: Block-transfer mechanism ensures consistent, scan-synchronized data exchange between the module and the PLC-5 processor — critical for process control loops.
- Free Configuration Software: ProSoft Configuration Builder (PCB) provides a graphical interface for mapping Modbus registers to PLC-5 data files, with built-in diagnostics and live data monitoring.
- Long-Term Availability: ProSoft maintains production and spare-parts support for MVI71 series modules, protecting your installed base investment.
- Extensive Protocol Support: Supports Modbus TCP/IP Function Codes 01, 02, 03, 04, 05, 06, 15, and 16 — covering coil, discrete input, holding register, and input register operations.
Complete System Bill of Materials
For a complete MVI71-MNET installation, engineers typically specify the following components:
- MVI71-MNET — Modbus TCP/IP Network Interface Module (this item)
- Allen-Bradley 1771 I/O Chassis (1771-A1B / A2B / A3B / A4B series)
- Allen-Bradley PLC-5 Processor (1785-Lxx series)
- Allen-Bradley 1771-P4S or compatible power supply
- Standard Cat5e/Cat6 Ethernet patch cable (RJ-45)
- ProSoft Configuration Builder (PCB) software — free download from ProSoft
- Managed Ethernet switch (recommended: Stratix 2000 or equivalent industrial switch)
Compliance & Industry Standards
- CE Marking — Compliant with EU EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU
- UL Listed — Recognized under UL 508 (Industrial Control Equipment)
- RoHS Compliant — Restriction of Hazardous Substances Directive 2011/65/EU
- Modbus Protocol — Conforms to Modbus.org specification for Modbus TCP/IP
- IEEE 802.3 — 10BASE-T / 100BASE-TX Ethernet standard
Quality Assurance & Sourcing
Konmask.com sources the MVI71-MNET exclusively from authorized distribution channels and verified industrial surplus partners. Every unit undergoes the following before shipment:
- Visual inspection for physical damage, corrosion, and label integrity
- Firmware version verification against ProSoft published release notes
- Functional power-on test confirming LED status indicators respond correctly
- Anti-static packaging with humidity indicator card
- Serialized traceability record retained for 5 years
We stand behind every shipment with a 30-day return policy and dedicated pre-sales technical support.
How to Source This Part
Ready to order the MVI71-MNET? Here’s how to proceed:
- Add to Cart — Immediate checkout for in-stock units with same-day or next-business-day dispatch.
- Request a Quote — Need volume pricing, lead-time confirmation, or export documentation? Email [email protected] with your PO requirements.
- Technical Pre-Sales — Our engineers can confirm compatibility with your specific PLC-5 chassis and firmware revision before you order. Call or WhatsApp: +0086 19859288691.
- Expedited Shipping — DHL Express, FedEx International Priority, and UPS Worldwide available at checkout for urgent plant shutdowns or maintenance windows.
Application-Specific FAQ
Q: Is the MVI71-MNET compatible with all PLC-5 processor revisions?
A: Yes. The module communicates via the 1771 backplane block-transfer mechanism, which is supported across all PLC-5 processor series (PLC-5/10, 5/15, 5/20, 5/25, 5/30, 5/40, 5/60, 5/80). Confirm your chassis slot availability before ordering.
Q: Can the MVI71-MNET connect to multiple Modbus TCP/IP devices simultaneously?
A: Yes. The module supports up to 4 simultaneous client/server connections, allowing it to poll multiple remote Modbus devices (drives, meters, RTUs) in a single scan cycle.
Q: What PLC-5 data files does the module use for data exchange?
A: The MVI71-MNET uses Integer (N) or Float (F) data files configured via ProSoft Configuration Builder. The specific file numbers and element ranges are user-defined during commissioning.
Q: Is configuration software included or separately licensed?
A: ProSoft Configuration Builder (PCB) is free to download from ProSoft Technology’s website. No license fee is required.
Q: Can this module replace a failed MVI71-MNET without re-programming the PLC-5?
A: Yes, provided the replacement module is loaded with the same PCB configuration file. The PLC-5 ladder logic does not need modification for a like-for-like swap.
Q: Does Konmask.com provide a warranty on this module?
A: We offer a 30-day return/exchange policy on all modules. For extended warranty or repair services, we can coordinate with ProSoft Technology’s authorized repair center.
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Contact: [email protected] | +0086 19859288691
