Skip to content

IDN

Query a device's identity through the universal *IDN? SCPI command. Inputs ------ default: DataContainer Any DataContainer - likely connected to the output of the OPEN_SERIAL block. Params: connection : Serial The open connection with the device receiving the *IDN? SCPI command. Returns: out : String The result of the *IDN? SCPI command.
Python Code
import serial
from flojoy import flojoy, SerialConnection, String, DataContainer
from typing import cast, Optional


@flojoy(deps={"pyserial": "3.5"}, inject_connection=True)
def IDN(
    connection: SerialConnection, default: Optional[DataContainer] = None
) -> String:
    """Query a device's identity through the universal *IDN? SCPI command.

    Inputs
    ------
    default: DataContainer
        Any DataContainer - likely connected to the output of the OPEN_SERIAL block.

    Parameters
    ----------
    connection: Serial
        The open connection with the device receiving the *IDN? SCPI command.

    Returns
    -------
    String
        The result of the *IDN? SCPI command.
    """

    # Start serial communication with the instrument
    ser = cast(serial.Serial, connection.get_handle())

    if ser is None:
        raise ValueError("Serial communication is not open")

    ser.write("*IDN?\n".encode())

    return String(s=ser.readline().decode())

Find this Flojoy Block on GitHub

Videos

Control Agilent 34410A multimeter with Flojoy

Example

Having problems with this example app? Join our Discord community and we will help you out!
React Flow mini map

This app opens a serial connection with the OPEN_SERIAL node, then queries the identity of the device with the IDN node.