we get a lot of requests for help, specially from people who assume too much.
it is rather annoying to see yet another post without usable information... no clue what you are calling "PLC" and "DRIVE" and "RED LED".
please read pinned topic READ FIRST.
Hi dear, I am facing the same problem, I will try to exchange the KPP0 of the robot, I believe it will solve the problem.
Did you find other solution?
panic mode SkyeFire Have you alredy faced this situation?
people asking for help without defining problem? yeah, i may have seen it once or twice. 
check my post here KUKA Downloads Software Cad
In my case it has been an EtherCAT cable to the RDC.
Sorry panic mode, I will specify the problem detailed next time, in accordance with the forum rules 😅
Thank you Florida!
