SDM72 three phase four wire energy meter

This RUST project can read and write a SDM72 energy meter from the command line.

Hardware

The following hardware is required for this project:

• One or more SDM72 energy meter.
• One USB-RS485 converter.

Data sheet SDM72 energy meter

• maximum 100 Ampere
• Two wire types: 3 phase with 4 wire or 1 phase with 2 wire
• RS485 Modbus RTU output
• Pulse Output
• Bi-directional measurement (import & export)

Compilation

1. Install Rust e.g. using these instructions.
2. Ensure that you have a C compiler and linker.
3. Clone git clone https://github.com/acpiccolo/SDM72-Powermeter.git
4. Run cargo install --path . to install the binary. Alternatively, check out the repository and run cargo build --release. This will compile the binary to target/release/sdm72.

Getting started

To see all available commands:

sdm72 --help

For RTU Modbus connected sdm72 energy meter:

sdm72 rtu --address 1 --baudrate 9600 read-all

For TCP Modbus connected sdm72 energy meter:

sdm72 tcp 192.168.0.222:502 read-all

You can even use this tool as a daemon for a MQTT broker, the connection is configured via the mqtt_config.yml file:

sdm72 rtu --address 1 --baudrate 9600 daemon mqtt

Cargo Features

Feature	Purpose	Default
tokio-rtu-sync	Enable the implementation for the tokio modbus synchronous RTU client	✅
tokio-rtu	Enable the implementation for the tokio modbus asynchronous RTU client	✅
tokio-tcp-sync	Enable the implementation for the tokio modbus synchronous TCP client	-
tokio-tcp	Enable the implementation for the tokio modbus asynchronous TCP client	-
bin-dependencies	Enable all features required by the binary	✅

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.