ROOT-PVSS Connection

14.04.2005 Slava Filimonov & Jim Cook, PVSS - ROOT Interface

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ROOT-PVSS ConnectionROOT-PVSS Connection

Current StatusCurrent Status


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IntroductionIntroduction

Interface that allows PVSS data to be displayed Interface that allows PVSS data to be displayed using ROOT, permitting all analytical using ROOT, permitting all analytical functions that are available in ROOTfunctions that are available in ROOT

MotivationMotivation Features and implementation of the Features and implementation of the

interfaceinterface Examples – including demonstrationExamples – including demonstration Future plansFuture plans


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MotivationMotivation

Limited PVSS functionalityLimited PVSS functionality Zoom impractical Histogramming difficult to use Exclusively data from PVSS No possibility to fit curve NOTE: This has been and is being improved

Physicists familiar with ROOTPhysicists familiar with ROOT ROOT is a very powerful analysis tool

Possibility for parallel data sourcesPossibility for parallel data sources Multiple PVSS systems Could include DAQ data, for example This is not implemented in the current version


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Basic featuresBasic features

Based on TCP/IPBased on TCP/IP Any number of ROOT clients can connect to Any number of ROOT clients can connect to

one PVSS projectone PVSS project Trend Plots:Trend Plots:

From a specified time in the past to present (updating) From a time in past to another time in past (since--

until) HistogramsHistograms ROOT Macros can be usedROOT Macros can be used No configuration necessary on PVSS sideNo configuration necessary on PVSS side Windows and LinuxWindows and Linux


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ROOT - PVSSROOT - PVSS Small API Manager (GetArc)Small API Manager (GetArc)

Only ~40 Kb

GetArc Manager

ROOT classes

PVSS

Viewer

Macros


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PVSS TCP ManagerPVSS TCP Manager

Pass data point names or aliases using Pass data point names or aliases using pattern (dpNames)pattern (dpNames)

Take data for defined period and pass to a Take data for defined period and pass to a client (dpGetPeriod)client (dpGetPeriod)

Send data on change (dpConnect)Send data on change (dpConnect) Send single datapoint value (dpGet)Send single datapoint value (dpGet)

Currently limited to integer, float and boolean

Standard PVSS functionality usedStandard PVSS functionality used


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Class StructureClass Structure

PVSSGraphPVSSNamePVSSValue

PVSSTrend

PVSSView

Pad

DrawTransaction()Refresh()

CTransaction

nameReady : Boolean

Start()Execute()Cancel()

1* 1*

PVSSGraphView

PVSSGraph2dView

PVSSHistViews

Retrieve single value

Retrieve DP names with

pattern

Display data from start time and

update

Display data from start time to end

time

Histograph‘Normal’ trend

Trend with 2-dimensional ‘surface’


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Example: Two Graphs/CurvesExample: Two Graphs/Curves

{// This script explains how the PVSS-ROOT class set is usedgROOT->Reset();gSystem.Load(“PVSSAccess.dll”);gBenchmark->Start("hclient");

ct = new TCanvas("ct","Time on axis",10,10,700,500); // Define Main CanvasTDatime start("2005-04-13 14:35:00"),end("2005-04-13 14:45:00"); // Define Time Intervalchar *dp = "ELMB/LaR/ELMB_1/AI/NTC_40.value"; // Data point name 1char *dp1 = "ELMB/LaR/ELMB_1/AI/NTC_41.value"; // Data point name 2time_t t = start.Convert(); // Convert to time_t formattime_t e = end.Convert();TPVSSAccess *sock = new TPVSSAccess("pcatics4.cern.ch",4242); // Connect to PVSS

PVSSViews *pvss = new PVSSGraphViews(ct,"Test"); // Define View

// Define two Graphs/Curves on one view/trendPVSSGraph *gr = new PVSSGraph(sock,dp, t,e,pvss);PVSSGraph *gr1 = new PVSSGraph(sock,dp1, t,e,pvss);pvss->insertTransaction(gr);pvss->insertTransaction(gr1);int rlen = sock->GetTimePeriod(gr); // Obtain data for first data pointint rlen1 = sock->GetTimePeriod(gr1); // For the secondpvss->drawTransaction();gBenchmark->Show("hclient");

}


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Example: 2D GraphsExample: 2D Graphs{

gROOT->Reset();gBenchmark->Start("hclient");gSystem.Load("PVSSAccess.dll");ct = new TCanvas("ct","Time on axis",10,10,700,500); // Main CanvasTDatime start("2005-04-12 9:00:00"),end("2005-04-12 11:00:00"); // Define Time Intervalchar **dpNames;char *dpw = "*Dubna_11?.Temperature.value"; // Data point using patternchar *dpt = ""; // Data point typeint len, rlen;time_t t = start.Convert(); // Convert to time_t formattime_t e = end.Convert();TPVSSAccess *sock = new TPVSSAccess("pcephc613.cern.ch",4242); // Connect to PVSSint tr = sock->GetDpNames(dpw,dpt,len,&dpNames); // Get DP name from PVSS

PVSSGraph2DViews *v = new PVSSGraph2DViews(ct,"Test"); // Open Viewv->SetOption("surf1");

for (int i = 0; i < len-3; i++) {// Open Trendscout << dpNames[i] << endl;PVSSGraph *gr = new PVSSGraph(sock,dpNames[i], t,e,v);rlen = sock->GetTimePeriod(gr); // Obtain data from data point

}v->drawTransaction();gBenchmark->Show("hclient");

}


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2D Graph Display2D Graph Display


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Example: TrendsExample: Trends{

// This is an example to open trendsgROOT->Reset();gSystem.Load("PVSSAccess.dll");gBenchmark->Start("hTrend");

ct = new TCanvas("ct","Time on axis",10,10,700,500); // Open canvas

char **dpNames;char *dpw = "@NTC*"; // Data point alias patternchar *dpt = "FwElmbAi"; // Data point typeint len;

TPVSSAccess *sock = new TPVSSAccess("pcatics4.cern.ch",4242); // Connect to PVSSint rr = sock->GetDpNames(dpw,dpt,len,&dpNames); // Take DP name from PVSSPVSSGraphViews *v = new PVSSGraphViews(ct,"Test"); // Open View

for (int i = 0; i < len; i++) {// Open Trendscout << dpNames[i] << endl;PVSSTrend *tr = new PVSSTrend(sock,dpNames[i],1800);v->insertTransaction(tr);sock->OpenTrend(tr);

}

v->startRefresh(5000);}


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Example: HistogramExample: Histogram{

gROOT->Reset();gSystem.Load("PVSSAccess.dll");gBenchmark->Start("hclient");TDatime start("2004-07-26 20:00:00"),end("2004-07-26 22:00:00");

char *dp = "ELMB/LaR/ELMB_1/AI/ai_0.value"; // DP nametime_t t = start.Convert(); // Start interval

time_t e = end.Convert(); // End Intervaldouble *res,*dd;TPVSSAccess *sock = new TPVSSAccess("pcatics4.cern.ch",4242); // Connect to PVSSint len;int rlen = sock->GetTimePeriod(dp,t,e,len,res,dd); // Get Datactt1 = new TCanvas("ctt1","Time on axis",10,10,700,500); gt = new TH1F("elmb_counts","This is ELMB counts distribution",100,61900,61950);for (int i = 0; i < len; i++) { gt.Fill(res[i]); // Fill Histogram}gt->SetTitle("ELMB/LaR/ELMB_1/AI/ai_5");ctt1->SetFillColor(41);ctt1->SetFrameFillColor(33);gt->SetFillColor(19);gt->SetLineColor(5);gt->SetLineWidth(2);gt->Draw("AL");gPad->Modified();

gBenchmark->Show("hclient");}


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PPPViewerPPPViewer

Menu to allow connection to be

set

Datapoint name and type selection (allowing

use of pattern)

Datapoint names displayed here

Time interval selection

Data display area


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Practical RemarksPractical Remarks

Can be downloaded from:Can be downloaded from: http://atlas.web.cern.ch/Atlas/GROUPS/DAQTRIG/DCS/dcshome.html

Root installation – IMPORTANTRoot installation – IMPORTANT Developed with Version 4.03/02 For Windows Visual Studio version

Delete LibNew Install suitable .DLL (for Visual Studio version)

Full instructions on ROOT web site Read them!

PVSS00GetArc ConfigurationPVSS00GetArc Configuration[tcp]tcpServerSocket = 4242


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Future PlansFuture Plans

ManagerManager Convert aliases to data point names and vice versa Extend data point types allowed when reading a single value

e.g. dyn_string ViewerViewer

Several pads in pppViewer Save and Load selected datapoint list Improve datapoint display and selection

Tree structure like Hardware or Logical View Active X componentActive X component

Can be displayed in PVSS panels Configuration of display on PVSS side

PVSSAccess libraryPVSSAccess library XY Graphs Signal/Slot event

Would allow for a ‘trigger’ Other data types (string, dyn_string,..) More than one connection


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Relation plotsRelation plots(value vs. value)(value vs. value)

Only one pair of values can be plotted at a timeOnly one pair of values can be plotted at a time


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Application ProtocolApplication Protocol

Request Header

Time

Start End

To PVSS

Answer Header

Data Timestamps

Data Point name

ROOT

Command

Request Header

Handler

Answer Header

Length Handler Length Data Type

ROOT-PVSS Connection

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