Python script for reading values from Graphtec (GL840) device with PyVisa. Serves as minimum working example.

The Graphtec class has been proven to work with a Graphtec GL840, and might work with other products from Graphtec since they have the same interfacing. Graphtec GL840 was connected via a ethernet hub to the computer.

• Check first if you can interface with the Graphtec by accessing the IP address in a browser. Graphtec IP can be found and changed on the device at "Menu > I/F > IP ADDRESS".
• See the manuals APS GL-Connection and Graphtec GL840
• The type of connection might be different, for me it was a Socket connection (line 13). See types of connections at PyVisa documentation