Product Description of ProSoft MVI69-HART

MVI69-HART is a dual-channel HART master station communication module specially designed by ProSoft for the Rockwell CompactLogix/MicroLogix platform. Through two independent HART master station interfaces, it directly connects and manages HART intelligent instruments (pressure, temperature, flow, level transmitters). By superimposing digital communication on the 4-20mA analog signal, it realizes process variable acquisition, equipment configuration, diagnosis and calibration, and is a standard solution for integrating HART devices in process automation systems. 

I. Model Analysis

MVI69: Specialized module for CompactLogix 1769 platform

HART: Highway Addressable Remote Transducer (High-speed Channel for Addressable Remote Sensors)

Core Positioning: Dual-channel HART master station, Bell 202 FSK, multi-point networking, analog + digital dual transmission, industrial-level isolation, single-slot installation

II. Core Hardware Specifications

Compatible Platforms: Full series of CompactLogix (L1x–L7x, excluding L16x/L18x/QBFC1B), MicroLogix 1500 LRP, 1769 I/O bus, single-slot installation

Backplane Power Consumption: Maximum 800mA @ 5.1VDC

HART Interface

Channels: 2 independent HART master stations

Protocols: HART protocol (Bell 202 FSK), compatible with HART 5/6/7 versions

Physical Layer: 2-wire 4-20mA current loop, FSK digital signal superimposition

Node Capacity: Up to 15 slave devices per port (multi-point mode)

Electrical Isolation: 1500Vrms optical isolation

Communication Rate: 1200 bps (HART standard)

Data Buffer: 4000 bytes bidirectional database, mapped to PLC controller tag

LED Status: OK, BP, CH1, CH2, ERR five groups of indicator lights

Operating Environment

Temperature: 0°C ~ +60°C

Storage: -40°C ~ +85°C

Humidity: 5% ~ 95% (no condensation)

Certifications: CE, UL, cURus, RoHS, Class 1 Div 2 Hazardous Area Certification

III. Core Functions and Performance

1. HART Master Station Communication (Core Advantage)

Dual-channel Independent HART Master Station

Two channels are completely independent and can operate simultaneously in point-to-point (direct connection to a single instrument) or multi-point (bus connection to multiple devices) mode

Active polling of all HART slave stations, automatic discovery of devices, reading of variables, status and diagnostics

Support for HART general commands (reading PV, SV, TV, FV process variables) and specific device commands

Configurable as Hand Controller mode, directly configuring, calibrating, and modifying parameters for the instrument

Analog + Digital Dual Signal Transmission

4-20mA Analog Signal: Transmits main process variables (PV)

FSK Digital Signal: Superimposes transmission of multiple variables, device status, diagnostic codes, configuration parameters

No need to modify existing wiring: Compatible with traditional 4-20mA circuits, smooth upgrade of intelligent functions

Automatic Data Acquisition and Processing

Module independently automatically polls, zero PLC CPU load

Supports periodic / triggered data updates

Real-time parsing of HART data, conversion to PLC standard tags

Built-in data cache to ensure communication stability

2. Seamless Integration with PLC System

High-speed Backplane Data Exchange

Module directly mapped as an I/O module to the PLC controller tag

Provides AOI (Add-On Instruction) and example programs to simplify development

All data, status, and diagnostic information is visible in the PLC program in real time

Configuration files are automatically saved to the PLC project

Deep integration with Studio 5000

Support for RSLogix 5000 / Studio 5000 configuration environment

Module status, channel status, device diagnostics, error codes are monitored in real time By using ladder diagrams, HART commands can be sent, parameters can be written, and equipment calibration can be performed.

3. Industrial-grade reliability and maintenance

Full electrical isolation protection

1500Vrms isolation: Anti-surge, anti-static, elimination of ground potential difference, protecting PLC and field instruments

Powerful diagnostic function

Real-time monitoring: Loop status, communication quality, equipment failure, signal quality

Support for HART device diagnostic status (such as sensor failure, exceeding range, calibration error)

Detailed error codes and event logs, quick fault location

Flexible configuration tools

ProSoft Configuration Builder (PCB) visual configuration by ProSoft Technology Inc

Support for batch configuration, export/import, online monitoring by ProSoft Technology Inc

Remote diagnosis and firmware upgrade by ProSoft Technology Inc

Four. Core features and advantages

1. Professional HART integration capability

Dual master stations, 30 device capacity: Single module connects all HART instruments in the plant, saving slots

Compatible with HART 5/6/7: Supports multi-variable, advanced diagnostics, device description (DDL)

Dual transmission of analog + digital: Protects existing investment, smooths intelligent upgrade

Point-to-point / multi-point flexible networking: Suitable for single direct connection, long-distance bus scenarios

2. Plug-and-play, easy development

AOI / example programs ready to use: No HART protocol programming required, 10 minutes online

Automatic polling, zero PLC load: Does not affect PLC scanning performance

Direct mapping of data to labels: Simplifies program development, reduces maintenance difficulty

Compact single-slot design: Saves cabinet space, easy installation

3. Stable and reliable in industrial sites

Full isolated HART circuits: Protects PLC from electrical interference in the site

Safety zone certification: Suitable for chemical, petrochemical, oil and gas, power, etc., harsh environments

Wide temperature range, no fan: Long-term continuous stable operation

Independent operation: Module failure does not affect PLC and 4-20mA analog circuits

Five. Typical application scenarios

Process automation: CompactLogix connects HART pressure, temperature, flow, level transmitters

Intelligent instrument management: Remote configuration, calibration, diagnosis, reducing on-site maintenance

Multi-variable acquisition: Simultaneously read main variables + auxiliary variables + diagnostic information (such as multi-parameter flow meters)

Old plant renovation: Traditional 4-20mA circuits upgraded to intelligent HART systems, no need for rewiring

SCADA system integration: HART device data接入 PLC/SCADA， achieving full plant monitoring

Equipment asset management： Online status monitoring， fault warning， life cycle management

Six. Summary

MVI69-HART is a professional-level HART communication solution for CompactLogix/MicroLogix platform. With dual independent HART master stations， Bell 202 FSK， 15 nodes per port， dual transmission of analog + digital， full electrical isolation， zero PLC load， deep integration with Studio 5000， safety zone certification as core advantages， specifically designed for HART intelligent instrument integration in process industry， old plant intelligent upgrade， remote equipment management， multi-variable data acquisition， it is the preferred industrial-grade communication module for Rockwell PLC to connect HART devices.