MA CS workshop 3-2-06Adriaan Rijllart1 LabVIEW integration into the LHC control system The LHCLabVIEW.

CS workshop 3-2-06

Adriaan Rijllart 1

MA

LabVIEW integration into the LHC control

system

The LHC LabVIEW

CS workshop 3-2-06

Adriaan Rijllart 2

MA

Presentation overview

Why LabVIEW in the LHC control? What is it used for? How? Can we do better? Can we use CS?

CS workshop 3-2-06

Adriaan Rijllart 3

MA

Why LabVIEW? Post Mortem analysis of transient events is much easier with LV than with Java.

Equipment experts are using LV to debug and commission their systems

PXI with LV-RT will be used for fast digitisers (8 GS/s), HW and drivers not available in VME.

On-line beam diagnostics needs fast software development tool to enable expert operators to quickly understand instabilities, resonances, beam losses, …

CS workshop 3-2-06

Adriaan Rijllart 4

MALabVIEW in the LHC control system

Javaapplication

CMW

CMWFESA

LabVIEWapplication

LabVIEWRealTime

DataSocketserver

LabVIEWapplication

Central partEquipment diagnostics

On-line beam diagnostics

lib

Data server

LabVIEWapplication

Post Mortemanalysis

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Adriaan Rijllart 5

MAPost Mortem data analysis stages

Individual system tests (QPS, PIC, PC)

Hardware Commissioning (powering) Sector tests (octant) LHC commissioning with beam LHC operation with beam

CS workshop 3-2-06

Adriaan Rijllart 6

MAQuench Protection System check-out

•Synchronised analog and digital graphs for visual inspection.

•Analysis of time constants•Transition sequence and delay times of digital signals.

CS workshop 3-2-06

Adriaan Rijllart 7

MA

LabVIEW equipment diagnosis

CMW wrapper developed at CERN

Equipment experts can connect to their equipment bypassing the middle tier

FESA is Front-End Software.

LHC Devices

FESA

LabVIEW

User application(virtual instrument)

FESA palette

FESA objects

CMW Wrapper

Client PC

TCP/IP

Wrapper DLL

CMW client

Orbacus OBECORBA client

FESA FEC

IP network

CMW server

Orbacus OBECORBA server

CS workshop 3-2-06

Adriaan Rijllart 8

MA

LabVIEW - CMW wrapper Get and Set functions are implemented.

Every Get command has 5 different modes:

0 – synchronous

1 – first request is synchronous and all next is asynchronous

2 – asynchronous

3 – subscribe property

4 – unsubscribe property

5 – last value from cache.

CS workshop 3-2-06

Adriaan Rijllart 9

MA

Data exchange Java-LabVIEW

The problem: OASIS - observation of analog signals system,

difficult to modify. Need for fast programmable signal analysis application

(FFT, filters, convolution, correlation,…).

Our solution: Connect via NI library to send data to the DataSocket

server. Then connect from any LabVIEW application to the

DataSocket server to receive the data. Minimum investment: only a Java data interface.

CS workshop 3-2-06

Adriaan Rijllart 10

MA

LabVIEW signal analyser

NI DataSocket Server

Java <-> LabVIEW data exchangethe OASIS example

Publish

Subscribe

OASISJava data interface

Existing

NI provided

AB/OP devel.

AP+MA devel.

Legend

NI.jar

CS workshop 3-2-06

Adriaan Rijllart 11

MAIntegration of LV-RT and PXI LV-RT on PXI can publish data.

Using LV8: network variables.

LV control room application merges OASIS and LV-RT data.

LabVIEWapplication

DataSocketserver

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Adriaan Rijllart 12

MA

Questions Can we profit from CS? If yes, how? Should we try DIM? Try LV8?