FTP functionality on Motoman robot can be a bit wonky.
There are numerous parameter related to this function and even after following strict procedures given by Yaskawa I was not able to successfully FTP some of the robots I've worked on.
Though, on my last project, I'm able to do so without altering any settings on the robot. But, you need to ping the robots before starting the FTP process, and only start the FTP process once pinged successfully, and it will generally work.
I used Python with its ftplib package. Not sure if you are using other forms of FTP.
Hi Teacrab131,
I know this reply is a bit older but would you mind sharing your FTP solution using Python ftplib here? (a small example would be great)