1. SCADA Selection and Usage at CERN
PVSS Users’ Meeting
5th & 6th April 2005

2. Overview Why did we look at SCADA? What was the evaluation process?
What were the selection criteria?
What are the important features of PVSS for CERN?
What is the current status and usage of PVSS at CERN?

3. Why look at SCADA Systems?
History:
Experiment Control Systems were developed in-house
Often many independent developments – integration issues
Significant in-house resources and long-term maintenance issues
Motivation:
New generation of experiments (LHC)
Reducing resources at CERN
CERN directive to outsource wherever possible in order to concentrate on core activities
Desire for common solutions wherever possible (especially between the four LHC experiments – JCOP)
Limited, but, positive experience with SCADA systems at CERN
Goals:
Understand what is available
Understand the future evolutionary trends
Evaluate whether technically suitable
Evaluate whether financially affordable

4. Selection of PVSS II
Evaluation for LHC experiments started in 1997 and finished in 1999 (>10 man-years effort)
Survey of market
First evaluation based on technical documentation and discussions
More detailed hands-on evaluation
LHC Experiment Acceptance of SCADA (?)
JCOP Workshop I June 1998 first presentation of SCADA technology
JCOP Workshop II September 1999 presentation of results of evaluation
PVSS II was selected after this extensive evaluation of multiple SCADA products and a full CERN tender (2000)
CERN-specific criteria (see next slide)
Contract negotiated with ETM and signed in November 2000
Unlimited licenses for the LHC experiments both at CERN and external institutes world wide
Advantageous financial conditions
In June 2002 extended to CERN-wide agreement
Excellent collaboration with ETM

5. SCADA Selection for the LHC Experiments (I)
168 Criteria in a number of categories
Concentrated only on non-standard features
Architecture
Event driven
Device oriented
Openness
Access to all internal data via an API
Database access
Hardware access
OPC
CERN Selected PLC
CERN Selected Field Buses
Scalability
Static
1M I/O
Large no. of alarms and archive data
Large no. of stations
Dynamic
Ability to increasingly add to the system
No limitations
No. of stations
Naming
...
Long term relationship - LHC lifetime > 10 years

6. SCADA Selection for the LHC Experiments (II)
Flexibility
Customisation
Easy integration of user functionality
CERN supported OSs
WNT, W2000
Linux RedHat
Inter-operability
Functionality
Scripting
Array handling
Advanced HMI (dynamic)
Sophisticated alarm handling
Administration of the SCADA
Development
Multi-user teams
Distributed teams
Configuration capabilities
Large number of devices
Not SCADA specialists
Compatibility with other systems
Operational concept
Integrated
Stand-alone Þ partitioning
Central and remote
Non-professional operators
Multiple simultaneous distributed operators

7. Important Features of PVSS
Openness
Linux and Windows
API / Driver development kit
OPC, DDE, ActiveX
ADO I/F (ODBC and OLE DB compliant DBs)
Oracle archiving
ASCII manager
ASCII graphics format (XML)
Inclusion of compiled function or launch an application from a script
Web and Information Server
Architecture
Device structuring
Event driven
Internal data stored in DPs
PVSS ‘tools’ are standard PVSS panels with associated scripts
Flexibility
Everything modifiable on-line
Control of PVSS tools via DPs
Powerful scripting (~Ansi C)
Dynamic arrays and sets
Scalability
Unlimited number of variables
Scattered PVSS systems
Distributed PVSS systems (up to 255)
Configuration
Possibility to use PVSS to configure itself
Perceived possibility of partnership with company

8. Evolution of PVSS Regular meetings with ETM Outcome:
Improved distributed systems
Improved performance and robustness
New AES
DP Groups
Recipes
Mass configuration
Support for Linux Red Hat
Oracle archiving
(ModBus and S7 drivers)
User’s Manual
Many other improvements in trending, OPC, scripting,…
Others planned, e.g. secure messaging, alarm reduction, DNS, ….

9. Usage of PVSS at CERN For LHC Experiments’ Control Systems
~2000 licenses generated by CERN (many are renewals)
~100 institutes in 26 countries
JCOP Framework being developed – see later presentation
Other CERN Users:
LHC Cryogenics Systems (UNICOS Framework) – see later presentation:
Surface
Tunnel
Experiment magnets
LHC and SPS Vacuum Systems
LHC Quench Protection System (QPS) – based on UNICOS
LHC Power Converter Interlock System (PIC) – based on UNICOS
LHC Experiment Detector Safety System (DSS) – based on data driven approach allowing a unique system to be used for 4 different applications
LHC Experiment Gas Control Systems (GCS) – based on model driven approach allowing 22 similar but different systems to be developed in an automated fashion (also using UNICOS Framework)
Fixed Target Experiments – based on JCOP Framework
NA60, HARP, COMPASS

10. DSS – Giulio Morpurgo

11. GCS – Stefan Haider/Geraldine Thomas

12. SPS and LHC Transfer Lines - Vacuum Control System
Synoptic of the SPS Complex
Pressure profile in LHC TI8
Vacuum layout of LHC TI8
Vacuum sectorisation of LHC TI8
Isabelle Laugier AT-VAC/IN Section

13. CMS – Robert Gomez-Reino Garrido

14. Conclusions
PVSS selected for the LHC experiments after an extensive evaluation (> 10 man-years)
PVSS is now the recommended SCADA product CERN-wide
PVSS is used extensively within the LHC experiments and increasingly in other domains
CERN is keen to continue the long-term partnership with ETM and believes this has been beneficial for both partners
CERN is interested in potential collaboration with other PVSS Users – PVSS Users’ Group