This is an Arduino Library for the multi-functional energy meter SDM120 Modbus.

• Pre-requisite
• Installation
  • Windows
  • Linux
• How-to
  • Convert Float to Array of Bytes (IEEE 754)
  • Convert Array of Bytes to Float (IEEE 754)
  • Construct Commands
  • Get Raw Data from SDM120 Modbus
  • Get all Processed Data from SDM120 Modbus
• Error Codes
• Bugs Reporting
• TODO

• Installed the lastest version of Arduino
• git

• Open cmd, enter

cd %userprofile%\Documents\Arduino\libraries &&
git clone https://github.com/ngharry/SDM120-Modbus

to download SDM120 Modbus library.

• Wait until the downloading process finishes.

[TODO] Add tutorial for Linux here.

See examples/FloatToBytes.

See examples/BytesToFloat.

See examples/ConstructCommands.

See examples/GetRawData.

See examples/GetData.

• Add terminology table.
• Add more error codes (as specified in doc/SDM120 PROTOCOL.pdf).
• Add intalling process for Linux (I love Linux).