The outcomes of a network disruption vary depending on the deployment model, but professional systems prioritize data integrity above all else.
1. Local Data Buffering (The "Gap-Fill" Feature)
When a gateway goes offline, it doesn't stop collecting data. It shifts from "transmitting mode" to "storing mode."
- Internal Storage: Professional-grade gateways are equipped with non-volatile internal memory. If the connection to the server (Cloud or Local) is cut, the gateway continues to poll your meters at the designated sampling interval (15, 30, or 60 seconds).
- Automatic Synchronization: Once the connection is restored, the gateway performs a "handshake" with the server and automatically uploads the buffered data. This "backfills" the gaps in your charts, ensuring your weekly and monthly reports remain accurate and complete.
2. Model-Specific Behavior
The duration for which your data is safe during an outage depends on your specific hardware tier:
Economic Model (Cloud-Based)
Typically stores several days of data locally if the internet fails. If the internet is down for weeks, the oldest buffered data may be overwritten by new readings once the internal memory reaches capacity.
Beginner & Advantage Models (Self-Hosted)
These models are unaffected by internet outages since the server is inbuilt. Your local dashboard and data logging continue 100% as normal. If your local LAN goes down, the gateway still logs data to its internal 2-year memory bank.
Promax PLC Model (Industrial-Grade)
Built for critical environments with 3 years of internal memory. Even if the entire facility network fails, the PLC logic continues to execute, and data is logged with 15-second precision to capture transient events.
3. Physical Data Recovery
For worst-case scenarios—such as a total network overhaul or long-term infrastructure changes—most models include a physical backup option.
- USB Export: You can physically connect to the gateway and export your data directly to a CSV or Excel file. This ensures your Data Sovereignty is maintained even if the digital path to the gateway is temporarily blocked.
- Power Failure Protection: If the power goes out, the gateway safely closes all open data files before shutting down, preventing file corruption. Once power returns, it reboots automatically and resumes monitoring within seconds.
| Feature | Economic Model | Beginner / Advantage | Promax PLC |
|---|---|---|---|
| Internet Outage | Buffers for ~3-5 days | Not Affected | Not Affected |
| Local Network Failure | Buffers locally | Logs to Internal Server | Logs to Internal Server |
| Data Safety Duration | Days (Limited Buffer) | 2 Years (Internal) | 3 Years (Internal) |
| Recovery Method | Auto-Sync on reconnect | Always available locally | Always available locally |
The Bottom Line
Your energy monitoring system is designed to be resilient to connectivity issues. By prioritizing local storage and automatic backfilling, we ensure that your historical context remains unbroken, allowing you to maintain ISO 50001 compliance and hit your sustainability targets without fear of data loss.