1. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
ROOT-PVSS Connection
Current Status
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

2. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Introduction
Interface that allows PVSS data to be displayed using ROOT, permitting all analytical functions that are available in ROOT
Motivation
Features and implementation of the interface
Examples – including demonstration
Future plans
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

3. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Motivation
Limited 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 ROOT
ROOT is a very powerful analysis tool
Possibility for parallel data sources
Multiple PVSS systems
Could include DAQ data, for example
This is not implemented in the current version
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

4. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Basic features
Based on TCP/IP
Any number of ROOT clients can connect to one PVSS project
Trend Plots:
From a specified time in the past to present (updating)
From a time in past to another time in past (since--until)
Histograms
ROOT Macros can be used
No configuration necessary on PVSS side
Windows and Linux
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

5. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
ROOT - PVSS
Small API Manager (GetArc)
Only ~40 Kb
GetArc Manager
ROOT classes
PVSS
Viewer
Macros
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

6. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
PVSS TCP Manager
Pass data point names or aliases using pattern (dpNames)
Take data for defined period and pass to a client (dpGetPeriod)
Send data on change (dpConnect)
Send single datapoint value (dpGet)
Currently limited to integer, float and boolean
Standard PVSS functionality used
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

7. Class Structure
‘Normal’ trend
Histograph
Retrieve single value
Retrieve DP names with pattern
Display data from start time to end time
Trend with 2-dimensional ‘surface’
Display data from start time and update
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

8. Example: Two Graphs/Curves{
// This script explains how the PVSS-ROOT class set is used
gROOT->Reset();
gSystem.Load(“PVSSAccess.dll”);
gBenchmark->Start("hclient");
ct = new TCanvas("ct","Time on axis",10,10,700,500); // Define Main Canvas
TDatime start(" :35:00"),end(" :45:00"); // Define Time Interval
char *dp = "ELMB/LaR/ELMB_1/AI/NTC_40.value"; // Data point name 1
char *dp1 = "ELMB/LaR/ELMB_1/AI/NTC_41.value"; // Data point name 2
time_t t = start.Convert(); // Convert to time_t format
time_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/trend
PVSSGraph *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 point
int rlen1 = sock->GetTimePeriod(gr1); // For the second
pvss->drawTransaction();
gBenchmark->Show("hclient"); }
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

9. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Example: 2D Graphs {
gROOT->Reset();
gBenchmark->Start("hclient");
gSystem.Load("PVSSAccess.dll");
ct = new TCanvas("ct","Time on axis",10,10,700,500); // Main Canvas
TDatime start(" :00:00"),end(" :00:00"); // Define Time Interval
char **dpNames;
char *dpw = "*Dubna_11?.Temperature.value"; // Data point using pattern
char *dpt = ""; // Data point type
int len, rlen;
time_t t = start.Convert(); // Convert to time_t format
time_t e = end.Convert();
TPVSSAccess *sock = new TPVSSAccess("pcephc613.cern.ch",4242); // Connect to PVSS
int tr = sock->GetDpNames(dpw,dpt,len,&dpNames); // Get DP name from PVSS
PVSSGraph2DViews *v = new PVSSGraph2DViews(ct,"Test"); // Open View
v->SetOption("surf1");
for (int i = 0; i < len-3; i++) {
// Open Trends
cout << 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");
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

10. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
2D Graph Display
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

11. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Example: Trends {
// This is an example to open trends
gROOT->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 = // Data point alias pattern
char *dpt = "FwElmbAi"; // Data point type
int len;
TPVSSAccess *sock = new TPVSSAccess("pcatics4.cern.ch",4242); // Connect to PVSS
int rr = sock->GetDpNames(dpw,dpt,len,&dpNames); // Take DP name from PVSS
PVSSGraphViews *v = new PVSSGraphViews(ct,"Test"); // Open View
for (int i = 0; i < len; i++) {
// Open Trends
cout << dpNames[i] << endl;
PVSSTrend *tr = new PVSSTrend(sock,dpNames[i],1800);
v->insertTransaction(tr);
sock->OpenTrend(tr); }
v->startRefresh(5000);
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

12. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Example: Histogram {
gROOT->Reset();
gSystem.Load("PVSSAccess.dll");
gBenchmark->Start("hclient");
TDatime start(" :00:00"),end(" :00:00");
char *dp = "ELMB/LaR/ELMB_1/AI/ai_0.value"; // DP name
time_t t = start.Convert(); // Start interval
time_t e = end.Convert(); // End Interval
double *res,*dd;
TPVSSAccess *sock = new TPVSSAccess("pcatics4.cern.ch",4242); // Connect to PVSS
int len;
int rlen = sock->GetTimePeriod(dp,t,e,len,res,dd); // Get Data
ctt1 = 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");
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

13. PPPViewer 14.04.2005 Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Datapoint name and type selection (allowing use of pattern)
Menu to allow connection to be set
Data display area
Datapoint names displayed here
Time interval selection
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

14. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Practical Remarks
Can be downloaded from:
Root 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 Configuration
[tcp]
tcpServerSocket = 4242
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

15. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Future Plans
Manager
Convert aliases to data point names and vice versa
Extend data point types allowed when reading a single value
e.g. dyn_string
Viewer
Several pads in pppViewer
Save and Load selected datapoint list
Improve datapoint display and selection
Tree structure like Hardware or Logical View
Active X component
Can be displayed in PVSS panels
Configuration of display on PVSS side
PVSSAccess library
XY Graphs
Signal/Slot event
Would allow for a ‘trigger’
Other data types (string, dyn_string,..)
More than one connection
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

16. Relation plots (value vs. value)
Only one pair of values can be plotted at a time
Slava Filimonov & Jim Cook, PVSS - ROOT Interface

17. Slava Filimonov & Jim Cook, PVSS - ROOT Interface
Application Protocol
Request Header
Time
Start
End
To PVSS
Answer Header
Data
Timestamps
Data Point name
ROOT
Command
Handler
Length
Data Type
Slava Filimonov & Jim Cook, PVSS - ROOT Interface