ProSoft MVI69-DNP Product Description

MVI69-DNP (DNP 3.0 Master/Slave Network Interface Module) is a DNP 3.0 master station / slave station communication module specifically designed by ProSoft for the Rockwell CompactLogix / MicroLogix 1500 platform. It provides 2 independent, software-configurable RS-232/422/485 serial ports, supports DNP 3.0 Level 2 and some Level 3 functions, and can act as a master station to actively poll field devices, or as a slave station to respond to SCADA system instructions, enabling seamless integration of CompactLogix with DNP devices in the power, water conservancy, and oil and gas industries.

I. Model Interpretation

MVI69: Specialized module for CompactLogix / MicroLogix 1769 platform

DNP: DNP 3.0 (Distributed Network Protocol) Distributed Network Protocol

Core Positioning: Dual ports, independent, master/slave dual mode, DNP 3.0 Level 2/3, event triggering, industrial-level isolation, SCADA dedicated

II. Core Hardware Specifications

Compatible Platforms:

CompactLogix: L20, L30, L35, L43, L45 (L43/L45 require installation in the first 2 slots of the rack) MicroLogix 1500 LRP

Incompatibility: 1769-L23E-QBFC1B, 1769-L16x, 1769-L18x

Slot occupation: Single slot (standard 1769 size)

Backplane power consumption: 800mA @ 5.1VDC

Serial port application (2 ports: P1 / P2):

Electrical standard: RS-232/RS-422/RS-485 software configurable

Isolation voltage: 1500Vrms optically isolated

Mode: Full duplex / Half duplex

Baud rate: 300bps ~ 115.2kbps

Connector: RJ45 (with RJ45 → DB9 adapter)

Flow control: Hardware handshake (RTS/CTS), supports Modem, radio

Configuration port (CFG): RS-232 (RJ45), used for module configuration, firmware upgrade

Internal database: Maximum 4000 register (users can customize data mapping)

Master station command: 300 user-defined DNP commands

Slave station connection: Up to 40 slave station devices

Event cache: 400 analog input events, 1000 digital input events

Data point support:

Analog input (AI): 2000 points

Analog output (AO): 500 points

Digital input (BI): 2000 points

Digital output (BO): 500 points

LED status: OK, ERR, P1, P2, BAT five groups of indicator lights

Operating temperature: 0°C ~ +60°C

Storage temperature: -40°C ~ +85°C

Humidity: 5% ~ 95% (no condensation)

Certification: CE, UL, cURus, RoHS, ATEX Class I Div 2

III. Core Functions and Performance

1. DNP 3.0 protocol support (core advantage)

Dual mode operation:

Master station mode: Active polling of DNP slave station devices (RTU, instrument, protection device), supports 300 user commands

Slave station mode: Respond to SCADA master station instructions, provide data upload and control execution

Protocol level: DNP 3.0 Subset Level 2 + Partial Level 3 functions

Event triggering:

Change report (RBE): Automatically report when data change exceeds the dead zone

Active upload (Unsolicited Response): Event pushed to the master station actively

Timestamp: All events with precise time stamp (supports SNTP synchronization)

Data classification: Class 0/1/2/3 data classification, optimizes SCADA polling efficiency

Dead zone control: Analog dead zone can be configured, reduces invalid communication

Cold / Hot start: Supports module cold start, hot start, no loss of configuration

Redundant slave station: Dual slave station port redundancy, automatic switching in case of failure

2. Serial port communication characteristics

Electrical isolation: 1500Vrms isolation, anti-interference, protection of PLC

Multi-machine network:

RS-485: 32-point multi-point bus

RS-422: Full-duplex point-to-point

RS-232: Point-to-point (≤15m)

Remote communication: Supports Modem dial-up, radio station, GPRS remote DNP communication

Data format: 7/8 data bits, 1/1.5/2 stop bits, odd / even / no parity

3. Backplane high-speed communication (PLC interaction)

Asynchronous exchange: Module and PLC data interaction is independent of the DNP network, does not occupy PLC scanning time

Data mapping: 4000-byte database directly mapped to PLC controller label

Interaction mode: Periodic I/O data mirroring

Ladder diagram AOI, MSG instructions for control

Real-time reporting of status, error codes, and events

Transmission delay: < 1ms (backplane high-speed bus)

4. Configuration and Diagnosis

Configuration software: ProSoft Configuration Builder (PCB)

Visual configuration of ports, master station commands, data points, dead zones, events

Configuration file download, backup, batch copying

Online diagnosis:

Port status, communication traffic, error count

Master station polling status, slave station response monitoring

Event log, timestamp, fault code

Battery status, module health monitoring

Four. Core Features and Advantages

1. Seamless integration of AB systems

Native compatibility: Specifically designed for CompactLogix/MicroLogix, single slot, backplane power supply

Plug-and-play: PLC automatically recognizes as an I/O module, no additional programming required

Tag mapping: Direct conversion of DNP data to PLC tags, simplifying program development

Program support from ProSoft Technology Inc: Studio 5000 AOI, ladder diagram routines, configuration examples

2. Professional-level DNP 3.0 functions

Event-driven: RBE + active upload, significantly reducing network load

Hierarchical data: Class 0/1/2/3 optimized SCADA polling, improving system response

Mass data points: 2000 AI/2000 BI/500 AO/500 BO, meeting requirements for large-scale SCADA

Event caching: Caches events during power loss or communication interruption, and retransmits upon recovery

Time synchronization: Supports SNTP network time synchronization, events are precisely traceable

3. Industrial-grade reliability

Photoelectric isolation: 1500Vrms isolation against surges, interference, and ground potential difference

Independent operation: Module failure does not affect the PLC host

Power loss protection: Built-in battery, configuration, events, timestamps not lost for 10 years

Wide temperature design: 0~60℃, suitable for harsh environments in power, water conservancy, oil and gas

Redundant ports: Dual slave station ports redundancy, zero interruption for critical applications

4. Efficient development, easy maintenance

Visual configuration: Drag-and-drop configuration in PCB software, rapid deployment

Online debugging: Real-time monitoring of events, communication status, quick fault location

Batch application of ProSoft Technology Inc: One-click copy of configuration files, rapid production at multiple sites

Remote diagnosis: Supports remote configuration, firmware upgrade, event viewing

Five. Typical Application Scenarios

Power SCADA system: Substations, distribution networks, power plants, CompactLogix connected to DNP 3.0 SCADA

Water conservancy monitoring: Reservoirs, gates, pumping stations, water quality monitoring, DNP equipment integration

Oil and gas long-distance transportation: Pipeline pressure, flow, valve control, DNP remote monitoring

Municipal public utilities: City water supply, gas, sewage SCADA systems

Industrial energy management: Factory power monitoring, intelligent instruments, power quality analysis

Upgrade of outdated systems: Old equipment without DNP interface connected to modern SCADA network

Remote wireless monitoring: Through GPRS, satellite, radio to achieve DNP communication at remote sites

Six. Summary

MVI69-DNP is the industrial standard solution for DNP 3.0 communication on the CompactLogix platform. With dual independent isolated serial ports, master/slave station dual mode, full functionality of DNP 3.0 Level 2/3, event-triggered active upload, 4000-byte large data buffer, 300 master station commands, 40 slave station connections, seamless compatibility of the entire AB series, industrial-grade reliability, and visual configuration as its core advantages, it is specially designed for SCADA system integration, remote monitoring, and upgrading of old equipment in industries such as power, water conservancy, oil and gas, and municipal public utilities. It is the preferred communication module for achieving interconnection between Rockwell PLC and DNP 3.0 network.