LHC Gas Control Systems

LHC Gas Control Systems

Geraldine ThomasK. Azarov, R. Barillère, S. Cabaret, N. Kulman, X.Pons, J. Rochez.

A model-driven approach for automatic PLC and SCADA code generation

ICALEPCS 2005, Geneva, Switzerland

ICALEPCS 2005 -FR2.3-6O 2

Outline

Problem description Objectives Strategy/principles Development status/planning Summary


Problem description

4 Experiments ~23 gas systems to build

Commonalities Standard devices

Valves, flow meters, mass flow controllers, etc… Modular architecture

Mixer, Distribution, Pump, Analysis, Purifier, etc…

Diversity Optional modules Options in modules


Gas system layout

Purifier

Mixer

Recovery

Pump

Primary Gas Supply

Analysis

USA 15

UX cavern

Analysis

Dis

trib

uti

on

Gas building

Functional modules

Other ModulesCO2 Absorber, CO2 Envelope,

ExhaustHumidifier


Gas modules’ diversity

Gas x

0

T

T

PT

Optional devices

Architecturevariation

PT

PT

PT


Objectives Homogeneous end-user applications

Complete control applicationsComplete control applications

Supervision layerSupervision layer Views, trending, navigation means, alarm Views, trending, navigation means, alarm

handling, recipeshandling, recipes Process control layerProcess control layer

Access to field devices, FSM, interlockAccess to field devices, FSM, interlock Middleware Middleware

Develop/maintain the applications Develop/maintain the applications with limited resourceswith limited resources


PVSS graphical object

Supervision Layer

Middleware

Process ControlLayer

GCS instance: 3-layer control application

Gas module operational states

Trees

Views

Recipes

HMI ApplicationSCADA - PVSS

Communication

Logic Control Application IEC 61131 Languages

Interlock logic

PLC objects Library

I/O objects

Field objectsControl objects

PVSS objects Library

PLC object proxies


Strategy/principles Strategy

Gas systems’ architecture based on a generic model Use industrial technologies

SCADA, PLC, fieldbuses Use of UNICOS FW

PVSS and PLC object libraries Time stamped middleware Data-driven code generator tools

Principles Model-oriented design for both

Supervision Process control

Automatic generation of input files for the supervision and process layers

Tools to automate the PVSS code production


Model-oriented logic

specifications

PVSS & PLC

Objects instantiation

Model-orientedSupervision

design Object DP instances

UNICOS SCADA

Views, trees, recipes, etc.

UNICOS baseline

UNICOS Middleware

Object DFB instances

Logic control

PLC

Supervision

LHC GCS instance

objectsspec

Automaticproduction

Automaticproduction

Meta-Model

Objectslogic

Configuration files

Code generation data flow


The meta-model What it is

Repository for all gas systems Contains the value of the options for each

gas system What it does

Generate configuration and specification files for both layers

Supervision Process control

What it provides Tools to edit the repository and generate

the files of any gas instance



specifications

PVSS & PLC




UNICOS SCADA


UNICOS baseline

UNICOS Middleware


Logic control

PLC

Supervision

LHC GCS instance

objectsspec

Automaticproduction

Automaticproduction

Meta-Model

Objectslogic

Configuration files



Application developer

Supervision layer

GCS instance (e.g. Alice TPC)

functionality

meta-model

Gas system options

Tools

Generation rulesCatalog of view

templates

Supervision functionality generation

Configuration files

Component templates


Generic template files



specifications

PVSS & PLC




UNICOS SCADA


UNICOS baseline

UNICOS Middleware


Logic control

PLC

Supervision

LHC GCS instance

objectsspec

Automaticproduction

Automaticproduction

Meta-Model

Objectslogic

Configuration files



PVSS and PLC objects instantiation

Meta-modelApplication developer

Objects’ specifications(GCS instance)

UNICOSTools

GCS object types Templates (PVSS & PLC)UNICOS object type

templates

PVSS objects

PLC objects


Middleware

GCS add-insApplication developer



specifications

PVSS & PLC




UNICOS SCADA


UNICOS baseline

UNICOS Middleware


Logic control

PLC

Supervision

LHC GCS instance

objectsspec

Automaticproduction

Automaticproduction

Meta-Model

Objectslogic

Configuration files



Control logic generation

Application developermeta-model

Commontool

PLC


Control logic code

Objects’ dependent logic

Logic code templates



Development status/planning GCS instances commissioning

A first gcs instance developed by hand. (Alice TPC) The model-driven approach validated with automatic

generation of the same gcs instance Another gcs instance is in preparation (Atlas RPC)

Framework and tools A complete and working generation process

set of tools to generate the PVSS and PLC code Most of gas module types have been implemented in

the supervision (views) and process layers (process behavior)

All supervision functionality have been implemented


Benefits of this approachA complete automatic generation process to

produce the PVSS and PLC code of any GCS instance.


meta-model

tools

Alice TPC(2 gas lines)

PVSS code

Supervision files

Logic files

PLC code

Objects options Objects options

Alice PMD)

PVSS code

PLC code

1. Generate any GCS instance

2. Generate same instance but with different options

3. Add a new gas module type

Alice TPC(3 gas lines)


Summary

Tested/validated/in use Based on standard technologies Based on existing software control libraries (UNICOS FW)

Features and Benefits Keep homogeneity across the systems Open architecture –extensible

Easily upgraded/maintained Flexibility

Can easily add new gas module types Allow option value changes/propagate changes across layers

Time saving Development of a new application Generation process of a control application

Model-driven approach which produces the full PVSS and PLC code of a control application

Thanks !

WE2.2-6I

PO1.042-6

WE2.1-6O

WE3A.2-6O

LHC Gas Control Systems

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