Your meters, inverters and PLCs speak Modbus. Your SCADA speaks IEC 60870-5-104. Max IEC Gateway is the translator in between: no programming, no drivers, no restarts.

Connect Modbus TCP, Modbus RTU (RS-485/RS-232) or RTU over TCP devices, map their registers to IEC points in a clean web dashboard, and the gateway serves them as an IEC 104 or IEC 101 controlled station. Commands flow back as well: single, double, setpoints and bitstrings, with select-before-operate.

Made for commissioning engineers. A live traffic monitor shows every Modbus and IEC frame and command, trends show what really happened, and 9 ready-made device templates (Eastron, Schneider, Carlo Gavazzi, SMA, SunSpec, Growatt, ABB) take you from wiring to a working point list in minutes. Every change applies live.

Runs as a Windows service or a Linux systemd service. Try it free for 30 days (all features, 15-minute sessions), then $75 one-time for a lifetime license with free updates: https://iec.maxenergic.com

Features

  • Modbus TCP, Modbus RTU (RS-485/RS-232) and RTU over TCP, several devices per serial line
  • IEC 60870-5-104 server and IEC 60870-5-101 (balanced/unbalanced) controlled station
  • Single and double points, even from individual bits inside a register
  • Measured values (normalized, scaled, float) with optional CP56Time2a time tags
  • Energy counters with counter interrogation and periodic reports
  • Every Modbus data type: Int16/32/64, UInt16/32/64, Float32/64, all 4 byte orders, scaling and offset
  • SCADA commands back to Modbus: single, double, setpoints and bitstrings
  • Select-before-operate or direct execute with a configurable select timeout
  • Absolute or percent deadbands plus cyclic transmission
  • Events buffered while no SCADA master is connected
  • Hot reload: devices, mappings, settings and ports change without a restart
  • 9 ready-made templates for popular meters and inverters
  • CSV import/export of point lists with a validated preview
  • Live traffic monitor for Modbus and IEC frames and commands
  • Built-in historian with trends and CSV export
  • Secure by default: password login, CSRF protection, IEC 104 master allow-list, optional HTTPS
  • Windows service or Linux systemd service

Project Samples

Live dashboard: IEC 104 server status, every Modbus device and all data points with quality, at a glance Map any Modbus register, coil or bit to an IEC point: type, IOA, scaling, deadband and commands Traffic monitor: watch every SCADA command, select-before-operate step and Modbus frame live IEC 60870-5-104/101 settings: timers, address sizes, master allow-list, all applied without restart Built-in historian: trend any IEC point over 1 h to 7 days and export it to CSV Add a meter in seconds: pick a ready-made template (Eastron, Schneider, SMA, SunSpec...) and get its full point list

Project Activity

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Categories

Communications, Networking, SCADA

License

Other License

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  • mohbara Posted 2026-10-12
    5 out of 5 stars
    Very good 😊
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Additional Project Details

Operating Systems

Linux, Windows

User Interface

Web-based

Programming Language

C#

Database Environment

SQLite

Related Categories

C# Communications Software, C# Networking Software, C# SCADA Software

Registered

2026-10-01
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