F.Momal / LHC-IAS-FS Experiences with SCADA packages in the LHC division F. Momal, CERN, Geneva.

F.Momal / LHC-IAS-FS

Experiences with SCADA packages in the LHC division

F. Momal, CERN, Geneva


The Control Structure

FactoryLink on HP/UX

Siemens PLCs

Ethernet - Sinec H1,TCP/IP

String Control Room

PCR


The Control Structure

StringSM18 commoncryogenic facilities

FactoryLinkon HP/UX FL on

HP/UX

Ethernet - Sinec H1,TCP/IP

Siemens PLCs


Services

• Connection to the central archiver

• Connection to the Central Alarm Server

• Connection to the GSM

• Web gateway• Extensions to FactoryLink (XYplot, Mathwork)


What worked well

• General stability

• Easy to install

• Easy and fast applications development

• Easy to maintain

• Easy to extend

• Product evolved according to the market

• Bugs were generally solved in the following release


Problems• Instability with the X Windows sessions.

• Impossibility to have a session at home.

• Some hardware failures.

• Hard to write reusable code.

• Backward compatibility was not perfect.

• Difficulties to debug network problems.

• Difficult to use built-in database connection


Why changing ?

• Europeans systems were now existing.

• Market trend seemed to be drifting towards Windows NT.

• Windows NT stability OK.

• PCs are powerful enough.

• Windows based standard appearing (OPC).

• Cost


Windows advantages• Cheaper: hardware, software and

maintenance

• People are used to the system

• Large amount of programs to add functionality– compilers– drawing programs– math tools

• Interoperability standards


Market Survey’s Criteria Run under Windows NT. Client-server and modular structure. Implement the mainly used automation protocol. Offer a complete API. Have an object-oriented RTDB. Use a standard computing language as the integrated

programming language. Possible set-up using an external description source. Follow the Microsoft interoperability standards (OLE,

ActiveX and DCOM). Export the archives in a standard format. Be European.


PLCs

Control Network

Data Server

Hot Backup Data Server

Client

RTDB

Acq. card

Local RTDB

Application

Subscribe

On Change

- MMI- Short term archives- Gateways: Archiving Web Access Alarm Server ...


Long Term Archiving

Local Archives

DataAcquisition System

Oracle

AFS Storage

Data Description


Gateways to the Supervision

Data Server

Hot Backup Data Server

ClientInternet Oriented

RTDBAlarm Server


RealTimeDataServer

Alarm ServerArchived Data

Server

Observer

Remote Control Station

Control RoomOfficePortable

Alarm Server


The Complete Structure

Remote Control Station

Control RoomOfficePortable

RealTimeDataServer

Alarm Server

Archived DataServer

Observer

Oracle

AFS Storage

Data Description

Archiver

F.Momal / LHC-IAS-FS Experiences with SCADA packages in the LHC division F. Momal, CERN, Geneva.

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