Introduction to LabView and EPICS

Transcription

1 Introduction to LabView and EPICS Bernardo Carvalho Instituto de Plasmas e Fusão Nuclear Instituto Superior Técnico Lisbon, Portugal 1 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

2 National Instruments NI LabVIEW 2 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

3 LabVIEW Programming 3 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

4 EPICS at ITER In February 2009 ITER Organization decided to use EPICS for the control system. This decision was based on three independent studies In February 2010 ITER-IO released the first version (V1.0) of CODAC Core System, which basically is a package of selected EPICS products 4 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

5 What is EPICS? EPICS is an abbreviation for: Experimental Physics and Industrial Control System EPICS is: A collaboration A tool kit A control system architecture EPICS PSI 5 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

6 The History In1989 started a collaboration between Los Alamos National Laboratory (GTA) and Argonne National Laboratory (APS) (Bob Dalesio & Marty Kraimer) More than 150 licenses agreements were signed, before EPICS became Open Source in 2004 Team work on problems, for example over Tech Talk mailing list Database and network protocol (CA) basically unchanged since Collaborative efforts vary Assistance in finding bugs GTA: Ground Test Accelerator APS: Advanced Photon Source Share tools, schemes, and advice 6 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

7 EPICS who is using it? Some members of the collaboration (very short List!): ANL (APS Accelerator, APS Beamlines, IPNS) in Chicago, USA LANL in Los Alamos, USA ORNL (SNS) in Oak Ridge, USA SLAC (SSRL, LCLS) in Standford, USA DESY in Hamburg, Deutschland BESSY in Berlin, Deutschland PSI (SLS) in Villigen, Schweiz KEK in Tsukuba, Japan DIAMOND Light Source (Rutherford Appleton Laboratory) in Oxfordshire, England In FUSION: NTSX, KSTAR, ITER and ISTTOK 7 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

8 Are there alternatives to EPICS in FUSION Research? Tango/Taco Developed at ESRF Used by ESRF, Elettra, Soleil DOOCS Developed and used by DESY Tine Developed and used by DESY ACS Developed and used at PSI MDSPlus Developed and used by RFX, MIT, Los Alamos 8 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

9 Distributed Control System Workstations, operator interfaces. Data processing middle layer, archive, Front-end Computers I/O, PLCs, Plant ADCs, DACs, Bin I/O Ethernet Field Bus 9 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

10 The architecture of EPICS Network based Client/Server Model (hence the EPICS logo) EPICS A Server provides information and service CA Client CA Client A Client uses the service or asks for the information CA Server CA Server For EPICS, client and server refer to their Channel Access role i.e. Channel Access Client and Channel Access Server 10 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

11 What is Channel Access A protocol how to transfer data A single data unit is called Process Variable (PV) A Process Variable has a unique name, which is used to refer to the data The detailed operation of Channel Access is unimportant for most programmers (it already works ) Channel Access is not dependent on a single programming language 11 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

12 Channel Access network flow 1. Query: Broadcast CA Client 2. Answer: direct connection 3. All further querys and answers work directly (Point-To-Point) Network CA Server 1 CA Server 2 CA Server 3 EPICS PSI 12 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

13 Control System Architecture A network based Client/Server Model, whose smallest data set is a Process Variable The Channel Access Protocol defines, what data (Process Variable) is transferred between server and client The entire set of Process Variables establish a Distributed Real-time Database of machine status, information and control parameters EPICS Database CAS Process CAS Process CAS Process CAS Process Variables Variables Variables Variables 13 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

14 Parts of EPICS Client Software MEDM OAG Apps ALH TCL/TK StripTool Output IOC CAS CAS IOC IOC IOC Input Perl Scripts Channel Access Many, many others CA Server Software EPICS Database Commercial Instruments Custom hardware Technical Equipment consists of Process Variables Sequence Programs Records Realtime control Custom Programs 14 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

15 How does it do it? Channel Access Client Operator Channel Access Server Channel Access Client Network (Channel Access Protocol) Channel Access Client Process Variables: S1A:H1:CurrentAO Computer Interface Power Supply S1:P1:x S1:P1:y Computer Interface Beam Position Monitor S1:G1:vacuum IOC Computer Interface Vacuum Gauge Machine 15 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

16 What is an IOC A special CA Server and CA Client A computer running IOC Core This computer may be: - VME based, operating system vxworks or RTEMS - PC, operating system Windows, Linux, RTEMS - Apple, operating system OSX - UNIX Workstation, operating system Solaris IOC means Input Output Controller An IOC normally is connected to input and/or output hardware An EPICS control system is based on at least one Channel Access Server (normally an IOC) An IOC runs a record database, which defines what this IOC is doing 16 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

17 Inside an IOC The major software components of an IOC (IOC Core) LAN (Network) IOC Channel Access Database Sequencer Device Support I/O Hardware EPICS PSI 17 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

18 IOC Database Configuration instead of Coding 'ioccore' software loads and executes 'Records Example Assignment: Read some temperature sensor Open/close a valve when value is above resp. below some threshold Most Simple Record: record(ai,"my:ai"){ } field(desc, my first record ) 18 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month 18 & Data xx, 2007 Acquisition Event

19 What do Records do? Records are active, they do things Get data from other records or from hardware Perform calculations Check values are in range and raise alarms Put data to other records or to hardware Activate or disable other records Wait for hardware signals (interrupts) What a record does depends upon its type and the values in its fields A wide range of records have already been created New record types can be added to a new application as needed A record does nothing until it is processed 19 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

20 List of Record Types Analog in Analog out Binary in Binary out Calculation Calculation out Compression Data fanout Event Fanout Histogram Motor Multi bit binary input Multi bit binary output PID control Pulse counter Pulse delay Scan Select Sequence String in String out Subarray Subroutine Waveform 20 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

21 IOC view of a Record record(ao,"demandtemp") { field(desc,"temperature") field(asg,"") field(scan,"passive") field(pini,"no") field(phas,"0") field(evnt,"0") field(dtyp,"vmic 4100") field(disv,"1") field(sdis,"") field(diss,"no_alarm") field(prio,"low") field(flnk,"") field(out,"#c0 S0") field(oroc,"0.0e+00") field(dol,"") field(omsl,"supervisory") field(oif,"full") field(prec,"1") field(linr,"no CONVERSION") field(eguf,"100") field(egul,"0") field(egu,"celcius") } field(drvh,"100") field(drvl,"0") field(hopr,"80") field(lopr,"10") field(hihi,"0.0e+00") field(lolo,"0.0e+00") field(high,"0.0e+00") field(low,"0.0e+00") field(hhsv,"no_alarm") field(llsv,"no_alarm") field(hsv,"no_alarm") field(lsv,"no_alarm") field(hyst,"0.0e+00") field(adel,"0.0e+00") field(mdel,"0.0e+00") field(siol,"") field(siml,"") field(sims,"no_alarm") field(ivoa,"continue normally") field(ivov,"0.0e+00") 21 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

22 This IOC 'Database does all that Visual DCT JAVA tool (Database Configuration tool) provides visual composition of EPICS databases 22 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

23 EPICS Sequencer Adds state-machine behavior to the IOC o SNL Language program Elevator Simula?on ss Elevator { state floor1 { when (floor2_call) { } state goto2 } state goto2 { 23 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

24 CA Client Software (from the EPICS Website - incomplete) ALH: Alarm Handler (obsolete) BURT: Backup and Restore Tool CASR: Host-based Save/Restore Channel Archiver (SNS) EDM: Extensible Display Manager (ORNL) MEDM: Motif Editor und Display Manager (X-WINDOWS StripTool: Strip-chart Plotting Tool and many more 24 B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

25 Control System Studio CS-Studio is an JAVA Eclipsebased collections of tools to monitor and operate large scale control systems. It's a product of the collaboration between different laboratory and universities. Best OPI, Yet (BOY) CSS BOY is an Operator Interface (OPI) development and runtime environment. An OPI is a graphical user interface which can display the control system live data graphically and provides the interface to input data to control system. With BOY, one can develop a powerful OPI in few minutes and start to run it immediately B. Carvalho Lisbon, November Author s 29, 2016 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event

26 Acknowledgements EPICS: CS-Studio: Presentation EPICS material copied from Bob Dalesio (LANL) Kay Kasemir (SNL) Elke Zimoch(PSI) Many other EPICS Training slides 26 B. Carvalho Lisbon, February Author s 11, 2011 name Diagnostics Place, Month & Data xx, 2007 Acquisition Event