All DCS equipment is interfaced to the ECS. The generic architecture is the following:

High & Low Voltages, Temperatures, etc.

On an aim for standardisation the following guidelines have been adopted:

• Commercial equipment should be used as much as possible.

• The HW interface to the equipment should be one of the CERN recommended fieldbuses:CANbus or Ethernet (preferable).

• The SW interface to the equipment, when available, is an OPC UA server, preferably delivered by the HW manufacturer or CERN. WinCC-OA provides an OPC UA Client.

• If the equipment manufacturer does not provide an OPC Server, the equipment can still be interfaced to WinCC-OA by writing a DIM server. A PVSS DIM client is also available. 

Recommended components (and migration to OPC UA):

The recommended platform for OPC-UA servers is Linux.
    - For Ethernet based devices the OPC UA Server can run in the same (virtual) machine as the WinCC-OA project.
    - For CANbus devices the OPC server runs on a CCPC box that needs to be migrated to Linux (or better a spare one setup).

The recommended version of WinCC-OA is 3.16

The latest versions of the JCOP FW and FwInstallation tool are recommended.

• CAEN high voltage power supplies

• JCOP Component
• OPC UA Server
  

• ISEG power supplies

• JCOP Component
• OPC UA Server
  

• WIENER low voltage supplies

• JCOP Component
• OPC UA Server
  

• ELMB for analogue and digital I/O

• JCOP Component
• OPC UA Server
  (Beat's installation notes)