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Max IEC Gateway connects Modbus devices to SCADA systems. It reads meters, inverters, PLCs and drives over Modbus TCP, Modbus RTU (RS-485/RS-232) or RTU over TCP, and serves the data as an IEC 60870-5-104 or IEC 60870-5-101 controlled station (slave).
Map registers to IEC points in a web dashboard: single and double points (also from register bits), measured values, step positions, bitstrings and energy counters, with any byte order, scaling, deadbands and time tags. SCADA commands are written back to Modbus with select-before-operate and a configurable select timeout.
Every change applies live, without a restart. Includes 9 device templates, CSV import/export, a traffic monitor, trends, IP allow-list and password-protected dashboard. Runs as a Windows service or Linux systemd service.
Free 30-day trial, then $150 one-time for a lifetime license (1 computer) with free updates: https://iec.maxenergic.com
Features
- Modbus TCP, Modbus RTU (RS-485/RS-232) and Modbus RTU over TCP devices
- IEC 60870-5-104 server (TCP) and IEC 60870-5-101 (serial, balanced/unbalanced)
- Single and double points, also from bits inside a register
- Measured values: normalized, scaled and float, with or without CP56 time tags
- Energy counters (integrated totals) with counter interrogation and periodic reports
- Int16/32/64, UInt16/32/64, Float32/64 in all 4 byte orders, with scaling and offset
- Commands: single, double, setpoints and bitstrings, back to Modbus
- Select-before-operate or direct execute, configurable select timeout
- Deadbands (absolute or percent) and cyclic transmission
- Event buffering while no SCADA master is connected
- Live changes: devices, mappings, settings and ports apply without restart
- 9 device templates (Eastron, Schneider, Carlo Gavazzi, SMA, SunSpec, Growatt, ABB)
- CSV import/export of mappings with validated preview
- Web dashboard with login, traffic monitor, trends and history export
- IEC 104 master IP allow-list, optional HTTPS for the dashboard
- Runs as a Windows service
Project Samples
