Product Description of ProSoft MVI56-MNETC

MVI56-MNETC is a Modbus TCP/IP multi-client/server enhanced communication module specially designed by ProSoft for the Rockwell ControlLogix platform. Its core function is to address the scenario of multiple Modbus TCP devices collecting data simultaneously in a complex network. Compared to the standard version MVI56-MNET, it significantly enhances the concurrent client capability and is a high-performance gateway for industrial multi-device integration. 

I. Model Analysis

MVI56: Special communication module for ControlLogix platform (not E-series enhanced version)

MNET: Modbus TCP/IP protocol

C: Multi-client (multi-client) enhanced feature

II. Core Hardware Specifications

Compatible platform: Rockwell ControlLogix 1756 series (local rack)

Slot occupation: Single slot (standard 1756 size)

Backplane power consumption: 800mA @ 5VDC, 3mA @ 24VDC

Ethernet ports: 1×10/100Mbps Auto-MDIX adaptive RJ45

Data buffer: 5000×16-bit registers (user can customize mapping)

Status indication: OK/APP/ERR three-color LED + 4-digit scrolling display

Operating temperature: 0°C ~ +60°C

Storage temperature: -40°C ~ +85°C

Humidity: 5% ~ 95% (no condensation)

Certifications: CE, UL, cURus, RoHS

III. Communication Performance Parameters

1. Protocols and Modes

Main protocol: Modbus TCP/IP (Client/Server concurrent mode)

Client (Client) core capability (multi-client enhancement):

Maximum client connections: 30 (parallel master stations, standard version only 1)

Command queue: Supports 100 Modbus commands (polling / event triggering) ProSoft Technology Inc

Function codes: 1, 2, 3, 4, 5, 6, 8, 15, 16, etc. complete Modbus TCP set ProSoft Technology Inc

Data processing: 32-bit floating point, long integer, bit operation parsing and mapping ProSoft Technology Inc

Server (Server) capability:

Maximum server sessions: 20 concurrent connections

Data service: 5000 register bidirectional mapping, supports SCADA/DCS upper computer access

2. Advanced Network Features

CIPconnect technology: Supports remote diagnosis and configuration through 1756-ENxT/CNB module

Built-in Web server: Module status, configuration, firmware update accessible via browser

EtherNet/IP bridging: Compatible with Rockwell CIP protocol, realizes cross-network data forwarding

Write protection jumper: Hardware-level anti-miswriting, complies with IEC 62443-4-1 safety standard

IV. Core Features and Advantages

1. Multi-client Parallel Architecture (Core Difference)

30 independent Modbus TCP clients parallel polling, efficiency is 30 times higher than standard version

Single module directly manages dozens of Modbus TCP instruments, inverters, PLCs

Multi-client isolation: Single device failure does not affect other connections, system stability is significantly improved

2. High-performance Data Processing

5000 register flexible mapping, meets the needs of large data volume collection from multiple devices

Asynchronous data transmission, does not occupy PLC main scanning cycle, does not affect control performance ProSoft Technology Inc

Supports event-triggered commands, critical data changes actively reported, reduces network load ProSoft Technology Inc

3. Seamless ControlLogix Integration

Plug-and-play, no additional power / gateway required, simplifies system topology Provide RSLogix 5000 / Studio 5000 AOI, ladder logic routines

Automatic mapping of registers to controller labels, reducing programming workload by 80%

4. Industrial-grade reliability and remote management

Wide temperature range, anti-interference, hot-swappable design, suitable for harsh industrial environments. ProSoft Technology Inc.

Web interface + 4-digit display, dual local/remote status monitoring

ProSoft Discovery Service automatically searches and assigns IP address in one click

V. Comparison with similar series models Table

Features

MVI56-MNETC (Multi-client) MVI56-MNET (Standard Version) MVI56-MNETR (Remote Version)

Number of Clients 30 (Parallel) 1 (Single Client) 1

Data Buffer Size 5000 Bytes 10000 Bytes 5000 Bytes

Multi-device Acquisition Optimal Only single device Only single device

Remote Optimization Supports CIPconnect Basic Remote ControlNet Deep Optimization

Web Server Built-in No Built-in Built-in

Applicable Scenarios Multi-device Parallel Acquisition Local Single Device General Use Remote Rack Specialized Use

Six. Typical Application Scenarios

Petrochemical Industry: Device Area Dozens of Modbus TCP Instruments/Valves Centralized Acquisition

Power Energy: Substation Smart Electricity Meters, Relay Protection Devices Parallel Communication

Water Treatment: Water Plant Pumps, Flowmeters, Water Quality Instruments Multi-device Integration

Manufacturing Industry: Production Line Multiple Frequency Converters, Servos, Sensors High-speed Data Interaction

Mining Metallurgy: Underground / Workshop Distributed Modbus TCP Devices Unified Monitoring

Building / HVAC: Air Conditioning, Boiler, Sensors Multi-node Networked Control

Seven. Summary

MVI56-MNETC is the flagship module of ControlLogix platform for Modbus TCP multi-device integration. With 30 parallel clients, high-performance isolated acquisition, industrial-grade reliability, and seamless PLC integration as its core advantages, it is specifically designed for large-scale, multi-node, and high-real-time complex industrial networks. It is the optimal single-slot solution to replace multi-modules and multi-gateways schemes.