If other software is running, close it.
Ensure that the communication port of PC is opened.
Ensure that the opened port is available.
Ensure that the communication cable specifications are the same as those 5.specified in the Control Specifications.
Ensure that the select switch is set to position 0.
Ensure that the display of the teaching box is off.
The communication is not available with the teaching box on.

You can save data to PC with the accompanying software JELDATA3 and the dedicated communication cable.

Please refer to the operating instructions on the official website:
https://www.jel-robot.com/support/migration.html