The Corrected CT Setup
If your readings seem wildly off, verify you haven't accidentally switched the shunt setting to 50A while using a 100A shunt.
The patched open-source .hex firmware or the specific ESPHome configuration YAML file. Step 2: Isolating the On-Board MCU peacefair pzem051 manual patched
| Description | Modbus Register Address | | :--- | :--- | | | 0x0001 | | Modbus RTU Address | 0x0002 |
(V5.0) that allow you to solder wires to the microcontroller. This allows you to read serial data directly into an Arduino or ESP32 for remote monitoring. The Corrected CT Setup If your readings seem
Test command (Modbus RTU): F8 03 00 00 00 02 CRC16 → request voltage + current.
Connect the positive (+) and negative (-) terminals of the power source to the voltage sampling inputs on the meter. This allows you to read serial data directly
Toggles the blue LCD backlight ON or OFF. The state is saved automatically when powered down. Resetting Accumulated Energy (kWh)
Connect the external power source's negative terminal to the of the shunt.
The manual patch for the Peacefair PZEM-051 offers several benefits, including:
Understanding the Peacefair PZEM-051: Functions, Wiring, and Manual "Patches"