Hi Mark, 
Thank you for your reply. 
I have a USB Cable from TS 590s to RigPi. 
I have also the  RigPI MFJ Cable for Kenwood TS 590s from the DATA jack on TS 590s to the audio jack on the RigPi. 
I use Win 10 on laptop and headset. 
I have done all meny settings from the Kenwood TS 590s(sg) PDF file. 

All  is working very good remote exept no modulation and button Power ON doesn´t work. 
Thanks in advance, 
Regards from Loic, SM5VFE