ProSoft MVI56E-MNETC/MNETCXT Modbus TCP/IP Multi-Client Enhanced Communication Module

MVI56E-MNETC is a high-performance multi-client Modbus TCP/IP communication module specially designed by ProSoft for the Rockwell ControlLogix platform. It is an enhanced version of the standard MVI56E-MNET, with its core advantage being the support for 30 concurrent client connections. It is designed specifically for large-scale data acquisition and control systems that require simultaneous communication with a large number of Modbus TCP devices. MNETC is the standard version, while MNETCXT is the wide-temperature enhanced version. 

I. Model Code Interpretation

MVI56E: Enhanced single-slot module for ControlLogix platform

MNETC: Modbus TCP/IP Multi-Client (multi-client)

XT: Extreme environment (wide temperature range, anti-corrosion coating) version

II. Core Technical Parameters

(1) Hardware Specifications

Compatible platform: Rockwell ControlLogix 1756 series chassis

Slot occupancy: Single slot

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

Ethernet port:

1 path, 10/100 Mbps adaptive RJ45

Optical isolation: 2500Vrms

Data buffer: 10,000 bytes (16-bit) shared register

Status indication: OK/APP/ERR LED + 4-character LED display screen

Environmental indicators:

Operating temperature: 0°C ~ +60°C (MNETC); -25°C ~ +70°C (MNETCXT)

Protection: MNETCXT features a full-panel coating

Certification: CE, UL, cURus, RoHS, ATEX (XT version)

(II) Communication Performance (Core Differences)

Client (Client): Up to 30 concurrent Modbus TCP client connections by ProSoft Technology Inc.

Server (Server): Up to 20 concurrent Modbus TCP server sessions by ProSoft Technology Inc.

Client command queue: Each client supports multiple commands, supports polling and event triggering

Function codes: Supports standard Modbus TCP function codes (1, 2, 3, 4, 5, 6, 8, 15, 16)

Data processing: Supports floating-point and long integer data, automatically mapped to ControlLogix tags

(III) Software and Management

Configuration software: ProSoft Configuration Builder (PCB)

Remote management: CIPconnect technology + built-in web server

PLC integration: Provides Add-On Instruction (AOI), compatible with Studio 5000

III. Core Features and Advantages

30 concurrent clients, performance leap

Compared to the single client of standard MNET, MNETC supports 30 independent clients to maintain long connections simultaneously by ProSoft Technology Inc. Completely solves the problem of slow response and easy timeout when polling multiple devices with a single client, increasing data throughput by 3-5 times.

Strong multi-server aggregation capability

Supports 20 server sessions, allowing multiple systems such as SCADA, MES, DCS to access simultaneously, forming a data concentrator with a single module.

Industrial-grade stability and remote operation

Full port isolation, wide temperature XT version, CIPconnect remote penetration diagnosis, ensuring stable operation in large-scale, distributed, and harsh environments.

Seamless compatibility, smooth upgrade

Fully compatible with the old MVI56-MNETC version programs, can be directly replaced without modifying PLC logic.

IV. MVI56E-MNETC vs MVI56E-MNET (Key Comparison)

Table

Feature MVI56E-MNET (Standard Version) MVI56E-MNETC (Multi-Client Version)

Number of Clients 1 30 (Core Advantage) by ProSoft Technology Inc.

Server Connections 20 20

Data Buffer 5,000 Bytes 10,000 Bytes

Applicable Scenarios Limited devices, single master station Large-scale networking, multi-device centralized collection

V. Typical Application Scenarios

Intelligent Factory: Connects dozens of Modbus TCP frequency converters, servo systems, robots simultaneously

Energy Management: Smart electricity meters, photovoltaic inverters, battery management systems (BMS) Large-scale data collection

Water Treatment / Municipal: Flow meters, water quality analyzers, PLC slave stations Distributed network

Metallurgy / Mining: Belt conveyors, elevators, instruments Long-distance, multi-node control

Data Center / Infrastructure: UPS, precision air conditioners, environmental monitoring Unified access to PLC

VI. Summary

MVI56E-MNETC is the preferred solution for large-scale Modbus TCP interconnection on the ControlLogix platform. Its 30-client concurrent architecture has completely overcome the performance bottleneck of a single client, and is the core module for building a high-speed, stable and large-capacity Modbus TCP industrial network.