Posted 13 Jul 2016 Hello, I'm in my last year of studing, and I have realise my project in automation and supervision. so, in the society, we have more than 20 machines commanded by 2 motors , these motors are controlled by 3 Variable Speed Drives. The problem is that i don't know which siemens products of "automation and supervision" must I use to program that and create an easy interface ? Thank you. Share this post Link to post Share on other sites