Connecting to Yokogawa 7651 by Yokogawa in Python

Instrument Card

The 7651 is a general-purpose DC source developed on YOKOGAWA’s state-of-the-art DC standard technology. The dual multiplying D/A converter has enabled the compatibility of high-speed response and high resolution. The 7651 also provides high accuracy and stability. In addition to the source function (current supply), the sink function (current absorption) is also available, so the 7651 can be used as not only DC voltage/current source but also high-precision electronic load. Further, a series of powerful functions to meet the system use such as the programming function up to 50 steps, the IC memory card capable of storing 7 patterns of programs, and GP-IB interface are provided as standard. This 7651 can be used for a wide range of fields from R & D to production line, service and maintenance.

Device Specification: here

Manufacturer card: YOKOGAWA

Yokogawa is a leading provider of Industrial Automation and Test and Measurement solutions. Combining superior technology with engineering services, project management, and maintenance, Yokogawa delivers field proven operational efficiency, safety, quality, and reliability.

• Headquarters: Japan
• Yearly Revenue (millions, USD): 318
• Vendor Website: here

Demo: Measure a solar panel IV curve with a Keithley 2400

Connect to the Yokogawa 7651 in Python

Read our guide for turning Python scripts into Flojoy nodes.

Flojoy

PROTOCOLS > SCPI

📄 IDN

Query a device's identity through the universal *IDN? SCPI command.

📄 MEASURE VOLTAGE

Query an instrument's measured output voltage, such as a DMM or power supply.

📄 SCPI WRITE

Write a SCPI command to a connected bench-top instrument and return the result.

InstrumentKit

To connect to a Yokogawa 7651 Power Supply using Instrumentkit, you can use the following Python script:

import instrumentkit as ik

# Connect to the Yokogawa 7651 Power Supply
yokogawa = ik.yokogawa.Yokogawa7651.open_gpibusb('/dev/ttyUSB0', 1)

# Set the voltage to 10V
yokogawa.voltage = 10 * ik.units.V

# Set the current to 50mA
yokogawa.current = 50 * ik.units.mA

# Enable the output
yokogawa.channel[0].output = True

# Disable the output
yokogawa.channel[0].output = False

This script imports the instrumentkit module as ik and uses the open_gpibusb method of the Yokogawa7651 class to connect to the power supply. The first argument is the device path (/dev/ttyUSB0) and the second argument is the GPIB address (1).

Once connected, you can set the voltage and current using the voltage and current properties of the Yokogawa7651 object. The values are specified using the ik.units module to provide the units (e.g., 10 * ik.units.V for 10 volts).

You can also enable or disable the output using the output property of the power supply channel. Set it to True to enable the output and False to disable it.

Note that the script assumes you have already installed the instrumentkit package and its dependencies.