3.2 System Control3.2.1 GeneralThe VSDS will be speed, torque, or power controlled in accordance with the requirement stated in the requisition.The Interface to the DCS as stated in this clause shall be done via a bus link (ROFINET, or Profibus-DP as exception). Vendor shall explain the method and bus link in the data sheet. Hardwired interface is only used as exception and should be prohibited if possible.General nots for PROFINET listed as below: