PZEM-004T board version 3.0

Arduino interface library for Peacefair PZEM-004T-100A v3.0 ( and maybe PZEM-004T-10A ) AC Communication Box

The Power supply from microcontroler power only the communication interface optocouplers. Make sure the device is connected to the AC power - board has a own power supply. AC High Voltage is VERY DANGEROUS. It can cause more serious issues such as Electrical injury of death. Don't be stupid..

Features

• Read access to all Input and Holding registers
• Write access to Manufacturer recomended Holding registers
  • Special build flag for full write access to all Holding registers
  • Write protection mechanism in case of full write access
• Callback on power alarm state
• Communication with device Modbus RTU Address
• CRC16_MODBUS checking out-of-the-box
• Communication errors statistics

Installation

Download the ZIP of this repository and install it manually. The guide how to do that can be found here

Other

If you want to dig in into this device please read my remarks in docs folder. There are (TODO) hardware modding tips and complete communication frames explanations for nerds :-)