List serial ports available on this machine.

Use this to find the port the power supply is on (it enumerates as a USB virtual COM port, e.g. COM4 on Windows or /dev/ttyUSB0 on Linux).

Open a serial connection to the power supply and verify it responds.

Args: port: Serial port name, e.g. COM4 or /dev/ttyUSB0. model: One of the supported models (sets the voltage/current limits). Defaults to RS-3005P (0-30 V, 0-5 A). baudrate: Serial baud rate; the manual specifies 9600.

Returns the device identification string and the active output limits.

Close the serial connection to the power supply.

Return the instrument identification string (*IDN?).

Set the output voltage setpoint, in volts.

Rejected if outside the connected model's range (e.g. 0-30 V on RS-3005P).

Set the output current limit, in amps (0-5 A).

In constant-current operation this is the current the supply holds the output to; rejected if outside the model's range.

Return the configured voltage and current setpoints.

Read the actual output voltage (V) and current (A) at the terminals.

Enable (True) or disable (False) the output terminals.

Enabling makes the terminals live at the configured setpoints.

Arm (True) or disarm (False) over-current protection.

When armed, the output is cut off if the current reaches the setpoint.

Return decoded device status: output state, CV/CC mode, OCP state.

Return a full snapshot: setpoints, live measurements and status.

Store the current panel settings into memory slot (1-5).

Recall panel settings from memory slot (1-5).