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Energy Meters

Wi-Fi Setup via Gateway

How HPzenAi energy meters connect to the cloud through the HPzenAi gateway's Wi-Fi link.

How Wi-Fi Works for Energy Meters​

HPzenAi energy meters communicate with the HPzenAi IoT gateway over RS485 Modbus RTU — a wired protocol. The gateway handles the Wi-Fi connection to your router and forwards all energy meter data to the HPzenAi cloud. The meter itself has no Wi-Fi radio; it relies entirely on the gateway for cloud connectivity. Complete the gateway Wi-Fi setup before commissioning any energy meters on the RS485 bus.

Step 1 — Complete Gateway Wi-Fi Setup​

Steps​

  • Set up the gateway Wi-Fi first — see IoT Gateway → Wi-Fi Setup Guide for the full walkthrough.
  • Confirm the gateway LED is solid green, indicating a stable Wi-Fi and cloud connection.
  • Open the HPzenAi app and verify the gateway shows Online status before proceeding.

Step 2 — Wire the Energy Meter to the Gateway​

Steps​

  • Connect the meter's RS485 A terminal to the gateway RS485 A terminal using shielded twisted-pair cable.
  • Connect the meter's RS485 B terminal to the gateway RS485 B terminal.
  • Apply 12V DC power to the energy meter — confirm the meter LCD is active.
  • The gateway will auto-discover the meter within 60 seconds of power-on if RS485 wiring is correct.

Step 3 — Link the Meter in the App​

Steps​

  • Open the HPzenAi app and navigate to Gateway → RS485 Scan.
  • Wait for the scan to complete — the energy meter will appear with its Modbus address.
  • Tap the detected meter and select Link to add it to your device list.
  • The meter tile will display live electrical data: V, A, kW, PF, and kWh.

Step 4 — Configure Alerts and Cost Rates​

Steps​

  • Open the energy meter tile and tap Settings.
  • Set your electricity tariff rate (₹/kWh or local currency) for automatic cost calculations.
  • Configure demand alerts to notify you when power exceeds a set threshold.
  • Set daily or monthly energy budget alerts to track consumption against targets.

Gateway Wi-Fi Quality Requirements​

Steps​

  • Minimum signal: −75 dBm at the gateway location for stable cloud sync.
  • Use a Wi-Fi repeater or mesh node to improve signal if the panel is located far from the router.
  • Choose a gateway model with SIM/4G fallback for sites where Wi-Fi is unreliable.
  • Energy meter readings buffer locally on the gateway for up to 24 hours if cloud connectivity is lost — data uploads automatically on reconnection.