Owon.DCPSU 1.0.0

OWON DC Power Supply Control Library

A .NET library for controlling OWON DC Power Supply units via SCPI commands over serial connections.

Features

• High-level API for controlling OWON DC power supplies
• Serial communication: RS-232/RS-485 support
• Async/await support for all operations
• Comprehensive SCPI command coverage:
  • Output control (enable/disable)
  • Voltage and current setting/measurement
  • Overvoltage (OVP) and overcurrent (OCP) protection
  • Power measurement
  • System control (local/remote mode)
  • Instrument identification

Supported Operations

Output Control

• Enable/disable power supply output
• Query output status

Voltage Control

• Set output voltage
• Query voltage setting
• Set/query overvoltage protection (OVP) limit
• Measure actual output voltage

Current Control

• Set output current
• Query current setting
• Set/query overcurrent protection (OCP) limit
• Measure actual output current

Measurements

• Measure voltage, current, and power simultaneously
• Extended measurements with fault status and operating mode
• Individual voltage, current, and power measurements

System Control

• Instrument identification (*IDN?)
• Reset to factory defaults (*RST)
• Switch between local and remote operation modes

Installation

NuGet Package

dotnet add package Owon.DCPSU

From Source

git clone https://github.com/your-repo/owon-dcpsu.git
cd owon-dcpsu
dotnet build

Quick Start

using Owon.DCPSU;
using Owon.DCPSU.Transports;

// Create serial transport
using var transport = new SerialScpiTransport(portName: "COM3", baudRate: 115200);
var psu = new OwonDcPowerSupply(transport);

// Connect and control
await psu.ConnectAsync();
var id = await psu.IdentifyAsync();
Console.WriteLine($"Device: {id}");

// Set voltage and current
await psu.SetRemoteAsync();
await psu.SetVoltageAsync(12.0);  // 12V
await psu.SetCurrentAsync(2.0);    // 2A
await psu.SetOutputAsync(true);    // Enable output

// Measure output
var (voltage, current, power) = await psu.MeasureAllAsync();
Console.WriteLine($"Output: {voltage}V, {current}A, {power}W");

// Disable output and return to local mode
await psu.SetOutputAsync(false);
await psu.SetLocalAsync();

Transport Configuration

var transport = new SerialScpiTransport(
    portName: "COM3",           // Serial port name
    baudRate: 115200,           // Baud rate (default: 115200)
    parity: Parity.None,        // Parity (default: None)
    dataBits: 8,                // Data bits (default: 8)
    stopBits: StopBits.One      // Stop bits (default: One)
);

API Reference

Core Methods

Output Control

Voltage Control

Current Control

Measurements

System Control

Operating Modes

The power supply operates in different modes:

• 0: Standby mode
• 1: Constant Voltage (CV) mode
• 2: Constant Current (CC) mode
• 3: Failure mode

Use MeasureAllInfoAsync() to query the current operating mode and fault status.

Requirements

• .NET 8.0 or later
• For serial communication: System.IO.Ports package (included)
• Compatible OWON DC power supply with SCPI support

Example Project

The repository includes a complete example project (Owon.DCPSU.Example) demonstrating:

• Serial connection setup
• Basic power supply control
• Voltage and current setting
• Output measurement
• Proper cleanup and local mode restoration

Run the example:

cd Owon.DCPSU.Example
dotnet run

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Support

For issues and questions, please open an issue on the GitHub repository.