Rockwell ProSoft MVI56-BAS Communication Interface Module

Product Overview

The ProSoft MVI56-BAS is a BASIC Communication Module designed to seamlessly integrate legacy BASIC programs from 1771-DB and 1747-BAS modules into modern Allen-Bradley ControlLogix systems. It enables efficient data transfer between ControlLogix processors and external devices using ASCII or DF1 protocols, facilitating the modernization of industrial automation systems without rewriting existing BASIC applications.

Key Technical Specifications

• Product Type: BASIC Communication Module
• Series: ProSoft MVI56
• Platform: Allen-Bradley ControlLogix
• Programming Language: BASIC-52
• Memory: 24,064 bytes RAM
• Program Storage: Compact Flash disk
• Communication Ports:
  • CFG Port: RS-232 serial configuration
  • PRT1: ASCII communication or program port
  • PRT2: ASCII communication or DF1 communication
• DF1 Communication: Configurable as full-duplex device or half-duplex slave
• DH-485 Communication: Interfaces ControlLogix with DH-485 devices (requires Rockwell AIC+ device)
• Backplane Current Load: 800 mA @ 5 VDC; 3 mA @ 24 VDC
• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Shock: 30g operational; 50g non-operational
• Vibration: 5g from 10 to 150 Hz
• Relative Humidity: 5% to 95% (non-condensing)
• Mounting: Single-slot, 1756 backplane compatible
• Certifications: UL, CE, RoHS
• Origin: USA

Key Features

• Legacy Migration: Integrates 1771-DB and 1747-BAS BASIC programs into ControlLogix
• BASIC-52 Support: Run existing BASIC programs without modification
• Compact Flash Storage: Easy program backup and transfer
• Multi-Protocol: ASCII, DF1, and DH-485 communication
• DF1 Master/Slave: Full-duplex device or half-duplex slave configuration
• DH-485 Bridge: Connect ControlLogix to DH-485 networks
• Ladder Logic Integration: Data exchange via ladder logic instructions

Applications

• Legacy BASIC program migration to ControlLogix
• ASCII device interfacing (printers, barcode readers, modems)
• DF1 device communication
• DH-485 network bridging
• Custom data processing tasks

Installation Guide

1. Install in single 1756 ControlLogix slot
2. Connect serial devices to PRT1 and/or PRT2
3. Use CFG port for initial configuration
4. Load BASIC programs from Compact Flash
5. Configure DF1 or DH-485 parameters via PCB
6. Set up ladder logic for data exchange

FAQ

Q: Can I run my 1747-BAS programs on MVI56-BAS?
A: Yes, it is designed to run legacy 1771-DB and 1747-BAS BASIC programs with minimal or no modification.

Q: What is the memory capacity?
A: 24,064 bytes RAM for program and data storage.

Model Selection Tips

• MVI56-BAS = BASIC module for ControlLogix legacy migration
• For generic ASCII serial, consider MVI56E-GSC
• For Modbus RTU, use MVI56E-MCM
• Verify existing BASIC program compatibility before ordering