Overview

The MVI56-MBP is part of ProSoft Technology’s MVI56 product family, specifically designed as a communication module for Allen‑Bradley ControlLogix 5570 / 1756 controllers. With its modular design, it provides seamless integration between the PLC and Modbus devices such as sensors, variable frequency drives, meters, and other industrial equipment.

Key Specifications

Model: MVI56-MBP

Supported Protocols: Modbus RTU, Modbus ASCII

Communication Speed: 300 to 115200 baud (configurable)

Ports: 2 Modbus ports (typically two RS‑485 interfaces)

Power Requirement: 24 VDC

Operating Environment:

• Temperature: -40°C to +70°C

• Protection Rating: IP54 or IP65 (suitable for harsh industrial conditions)

• Dimensions & Weight: Approximately 100–120 mm x 50–80 mm x 30–40 mm, 0.2 kg

Product Features

• Industrial‑Grade Reliability: Constructed with aluminum alloy and high‑grade protection, ensuring stable operation in high temperature, low temperature, humidity, and other harsh environments.

• High‑Performance Data Transfer: Supports high‑speed Modbus communication with up to 4000 words, ensuring real‑time performance in high‑load automation systems.

• Easy Integration: Designed as a ControlLogix expansion module, it installs easily in standard racks and is fully compatible with Allen‑Bradley controllers.

• Flexible Configuration: Multiple baud rate options from 9600 to 115200 bps, compatible with a wide range of Modbus devices, and configurable to meet specific field requirements.

Structure and Components

• Communication Interfaces: Two RS‑485 ports (or one RS‑485 plus one RJ45 Ethernet port in some models supporting Modbus TCP), responsible for physical layer connectivity.

• Power Management: Regulates the 24V DC input to ensure stable power for internal logic circuits.

• Processor and Protocol Conversion Unit: The core chip converts data between Allen‑Bradley’s internal format and Modbus protocol, enabling protocol interoperability.

• Indicators / Display: Some advanced versions include LED status indicators or a display for communication status, error codes, and diagnostic information.

Application Areas

• Industrial Automation: Connects Allen‑Bradley PLCs with Modbus‑compatible sensors and actuators for closed‑loop control.

• Energy Management and Monitoring: Integrates with energy meters in EMS systems, collecting consumption data into the PLC for centralized monitoring.

• Building Automation: Interfaces with Modbus HVAC, lighting, and control systems in BMS applications.

• Process Control and Data Acquisition: Widely used in water treatment, wastewater management, and manufacturing facilities requiring extensive data collection.

Installation and Maintenance

Installation: As a standard ControlLogix expansion module, the MVI56‑MBP uses a single‑slot design and installs directly into the PLC chassis. Ensure correct power polarity and proper A/B wiring for RS‑485 connections.