Programmable Modbus Gateway MC252 (4G / Ethernet / RS-485)

Programmable Modbus Gateway Overvis MC252 (4G / Ethernet / RS-485)

The Overvis MC252 is an industrial programmable RS-485 to Ethernet / GSM / LTE gateway and controller designed for complex industrial automation, dispatching, and remote monitoring applications. The device bridges legacy industrial equipment operating on Modbus RTU/ASCII protocols with modern SCADA systems, cloud IT platforms, and the Internet of Things (IoT) infrastructure.

Thanks to its flexible settings and high reliability, the MC252 gateway is an ideal choice for building a unified monitoring network alongside intelligent devices manufactured by Novatek-Electro, such as the three-phase OM-310 power limiting relay, the UBZ-302M universal motor protection unit, or in combination with the EM-486 interface controller for communication channel redundancy and expansion.

Key Features and Functional Advantages

• Reliable Protocol Bridge: Seamlessly converts RS-485 (Modbus RTU/ASCII) interfaces to Modbus TCP for smooth data exchange.
• Communication Channel Redundancy: A combination of wired Ethernet (10/100 Mbps) and wireless 4G/LTE (with automatic failover to GSM) guarantees an uninterrupted connection.
• Maximum Network Security: Built-in WireGuard VPN client for establishing fully encrypted data tunnels to enterprise servers.
• Versatile Operating Modes: Functions as a Modbus Master, Slave, or Transparent Gateway with an address remapping option.
• Local Automation: Supports custom automation logic execution via scripts, allowing you to configure event handlers and triggers.
• Deep Data Logging: A MicroSD card slot (supporting up to 32 TB) enables local storage for data archives, event logs, and configuration backups.
• On-site Diagnostics: A crisp built-in OLED screen displays real-time network connection status and speeds up the initial hardware setup.

Technical Specifications and Management Interfaces

Typical Applications

• Remote Object Dispatching: Building monitoring systems for industrial control cabinets, metering stations, and street lighting networks via cellular grids.
• Data Consolidation: Aggregating data from Novatek-Electro relay protection and automation devices (such as OB, EM, and RPM series) into unified SCADA or cloud IoT systems.
• Data Loss Prevention: Local archiving of grid parameters onto a memory card during temporary cloud or server connection outages.
• Schedule-Based Automation: Implementing complex electrical equipment operation algorithms using built-in timers and schedules.
• Emergency Alerts: Automatic, instant SMS notifications sent to maintenance personnel when critical threshold events occur on-site.

Purchase the Overvis MC252 programmable gateway directly from the manufacturer — Novatek-Electro — backed by an official 5-year warranty.