Hello, 

I would like to connect HMI devices (KTP400 Basic) to a ET200SP CPU 1510SP-1 PN via profinet.

I know from technical data:

• Number of connections via integrated interfaces:    64
  
• Number of connections reserved for ES/HMI/web:  10
  

But what is the limit of the connected HMI devices? Is it 64, 10 or something else?

Thanks for your answers.