Peacefair Pzem-051 Manual
To read data programmatically, you query specific registers using the device address (default usually 0x01 or 0xF8).
| Data | Register Address | Data Type | | :--- | :--- | :--- | | Voltage | 0x0000 | Unsigned Int (x 0.1V) | | Current | 0x0001 | Unsigned Int (x 0.01A) | | Power | 0x0002 | Unsigned Int (x 0.1W) | | Energy | 0x0004 | Unsigned Int (x 1Wh) |
Note: Libraries such as PZEM004Tv30 for Arduino IDE abstract this Modbus complexity, making it very easy to read values. peacefair pzem-051 manual
The PZEM-051 comes pre-calibrated at the factory. However, due to wire resistance, you might see a 0.1A to 0.3A current reading even when nothing is on (tare error).
How to Zero the Current Reading (If available in your firmware): To read data programmatically, you query specific registers
Always confirm labels on your board; manufacturers vary.
This section is a direct interpretation of the Peacefair PZEM-051 manual. You will see silkscreen markings on the back of the device: VCC, GND, B+, B-, I+, I-. Measurement Input (AC): Usually labeled L (Live/Line) and
The PZEM-051 typically has two input blocks on the main module:
L (Live/Line) and N (Neutral).
If you purchased a new unit, the package contains:
⚠️ DANGER: HIGH VOLTAGE ⚠️ This device connects directly to AC Mains power. Installation should only be performed by qualified personnel. Incorrect wiring can result in fire, equipment destruction, or lethal electric shock.
The most common questions regarding the Peacefair PZEM-051 manual revolve around wiring. Incorrect wiring will damage the unit immediately.