MVI71-MCM Prosoft
MVI71-MCM Prosoft

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ProSoft Technology

ProSoft Technology MVI71-MCM Communication Module

SKU: MVI71-MCM
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$4,999.67
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MVI71-MCM ProSoft Modbus Master / Slave Serial Communication Module for 1771 Backplane

The ProSoft Technology MVI71-MCM is a single-slot Modbus serial communication module built for Rockwell 1771 PLC backplane. It supports simultaneous Modbus Master and Slave (RTU/ASCII) functions, enabling Rockwell 1771 controllers to exchange data with Modbus field instruments, Modicon PLCs, flow meters, temperature transmitters and SCADA systems. Technical data sourced from official ProSoft datasheet. Supplied by SHLY-PLC, an independent industrial automation distributor; each unit undergoes visual inspection and functional testing before shipment for retrofit and spare replacement projects. Contact our team for compatibility verification.

Features

  • Order Code: MVI71-MCM
  • Product Family: MVI71 inRAx Series
  • Primary Function: Modbus RTU / ASCII Master & Slave serial module for 1771 backplane
  • Backplane: Single slot for Rockwell 1771 PLC chassis
  • Serial Ports: Two DB9 serial ports, jumper selectable RS232 / RS422 / RS485, galvanic isolation
  • Protocol Support: Concurrent Modbus Master and Slave, Modbus RTU & ASCII modes
  • Internal Database: Up to 5000-word register space for data exchange between PLC and Modbus network
  • Configuration: ProSoft Configuration Builder (PCB), sample BTR/BTW ladder logic included for RSLogix 5
  • LED Status: Backplane, Application, Port 1 Tx/Rx, Port 2 Tx/Rx diagnostic LEDs
  • Lifecycle: Discontinued OEM production, aftermarket spare part only
  • Typical Use: Integrate legacy 1771 PLC with Modbus RTU field devices, process plant retrofits & spare replacement

Specifications

Official Datasheet Technical Parameters

Technical Specifications
Catalog Number MVI71-MCM
Hardware Type 1771 Single-Slot Modbus Serial Communication Module
Backplane Power 800mA @ 5VDC, 3mA @ 24VDC
Serial Interface 2 × DB9, Jumper configurable RS232 / RS422 / RS485, isolated
Modbus Modes Modbus RTU / ASCII, Master & Slave concurrently
Data Register Database 5000 words max
Environmental Ratings
Operating Temperature 0°C ~ +60°C (32°F ~ +140°F)
Storage Temperature -40°C ~ +85°C (-40°F ~ +185°F)
Relative Humidity 5% ~ 95% RH, Non-Condensing

Compatibility & Cross-References

The MVI71-MCM is ProSoft legacy Modbus serial module for Rockwell 1771 PLC backplane. It operates as a standard I/O module for the 1771 rack, using BTR/BTW block transfers in RSLogix 5 to move data between the PLC processor and module’s internal register database. Two independent serial ports can be separately configured as Modbus master or slave. This listing is provided by an independent industrial-automation distributor; brand names and part numbers are used for product identification only.

Applications

  • Legacy Rockwell 1771 PLC connect to Modbus RTU transmitters, flow meters, sensors
  • Modicon PLC, third-party Modbus device interconnection with 1771 control systems
  • SCADA and HMI serial Modbus communications for existing process plants
  • Legacy automation system spare replacement and control system retrofit

Warranty

  • Availability: MVI71-MCM discontinued OEM production, supply as aftermarket spare; contact us for real-time stock status.
  • Inspection & testing: each unit is visually inspected and functionally checked before packing.
  • Delivery: orders are processed within 2-4 business days after payment confirmation; standard worldwide delivery is about 5-8 business days, express shipping available, orders over $500 ship free.

Warranty: 12-month seller warranty provided by SHLY-PLC. See our Return Policy for coverage and claims.

Independent supplier: ProSoft Technology part MVI71-MCM is supplied by SHLY-PLC, an independent industrial automation distributor. Brand names and part numbers are used for product identification and remain the property of their respective owners; this listing is not affiliated with, sponsored or endorsed by the manufacturer.

Frequently Asked Questions

Q: What is MVI71-MCM?

A: MVI71-MCM is ProSoft Modbus RTU/ASCII Master/Slave serial communication module for Rockwell 1771 PLC backplane.

Q: What software configures MVI71-MCM?

A: ProSoft Configuration Builder (PCB) for network setup; RSLogix 5 with BTR/BTW ladder blocks for backplane data transfer.

Q: Can both ports run different Modbus modes?

A: Yes, each DB9 serial port can be independently configured as Modbus Master or Slave, RTU or ASCII.

MVI71-MCM · Technical reference data · Independently supplied by SHLY-PLC

Standard International (tracked courier): delivered in 5–8 business days. In-stock items are processed within 2–4 business days. USD 25 flat rate on orders of $500 or less; free on orders over $500.

Express (DHL Express / FedEx International): upgraded expedited delivery in 2–4 business days. The Express surcharge is calculated at checkout based on destination and order weight.

Non-Stock / On-Order items ship on request: dispatch time is confirmed before your order — see our Shipping Policy. Remote-area and overweight surcharges, where applicable, are shown before checkout.

Every product is covered by a 12-month seller warranty provided by SHLY-PLC, effective from the date of delivery, against defects in materials and workmanship under normal use. Manufacturer or factory warranty service is not applicable, and extended warranty packages are not provided.

This warranty does not cover damage from misuse, improper installation, power surges, neglect, unauthorized repair, or normal wear and tear. See our Return Policy for warranty-claim instructions.
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