sns integrated control system epics recent applications and future directions bob dalesio june 12,...

SNS Integrated Control System

EPICS Recent Applications and Future Directions

Bob Dalesio June 12, 2001


EPICS is a Suitable for a Large Range of EPICS is a Suitable for a Large Range of

Control InstallationsControl Installations

• PVs I/O Controllers

•K Advanced Photon Source 300K 170 •E KEK B 240K 94•CCEBAF 180K 98•BBESSY II 150K 110•SSwiss Light Source 90K 160•DD0 (FNL) 60K 124•PPEP II RF and Longitudinal Control 19K 21•LLow Energy Demonstrator Accelerator 15K 18•CCompass 1K 1•KKeck II 2K 2•GGemini Telescope 35K 17•*Next Linear Collider Test Accelerator 3K 2•**Diamond 50K 180•**Japanese Hadron Facility ~50K ~100•**PF-AR ~25K ~50•**Spallation Neutron Source 150K 150

*Planned or under construction


EPICS Supports a Standard Control System EPICS Supports a Standard Control System

ArchitectureArchitecture

Workstations: Sun Hp DEC/Alpha Silicon Graphics PC

I/O Controllers: VME VXI PCI

Field I/O

Remote and Local I/O Buses: Control Net, PCI, CAN-Bus, Industry Pack, VME, VXI, PCI, ISA, CAMAC, GPIB, Profibus, Bitbus, Serial, Allen-Bradley, Modbus, Yokogawa, G-3, Ethernet/IP

Field I/O Field I/O

Site LAN/WAN


Support For This Extensive Code Base is Support For This Extensive Code Base is

Divided into Core and ExtensionsDivided into Core and Extensions

Channel Access Client (CAC)Connection Data Transfers

WAN/LAN

Connection Data TransfersChannel Access Server (CAS)

DB Engine

Device Support

Driver Support

Generic Data Descriptor

Channel Access Client

Active X

Labview / Excel..

Access Lib

Any Data Store

I/O Controller Gateway Portable CAS PCAS - Windows

Archiving

Archive Access

Archive Viewing Archive AnalysisUser ToolsDM/MEDM/DM2K/EDM/JDMAlarm Handler / stripTool/knobManager

Connection Data TransfersPortable Channel Access Server (CAS)

Types

Connection Server

Program InterfacesC, C++, Fortran, JAVAIDL / Matlab / MathematicaActiveX / DDE / VisBasicSDDS / SAD / tcl / PERL / PythonState Notation Lang / FSQT


Modifications to Core are Tightly Controlled Modifications to Core are Tightly Controlled

and Rigorously Testedand Rigorously Tested

•CCore operational on LINUX, SOLARIS, Windows, RT Linux, and RTEMS eliminates the requirement to purchase vxWorks and supports a single computer control system – ANL, LANL, Canadian Light Source, KEK.

•NNew Data Object enables future modifications to the Channel Access Protocol and Event Mechanisms – LANL, BESSY, ANL

•CConversion from 68K platforms to Power PC for Process Database supports the execution of 100K process variables per second. (33 input->control->outputloops at 1 KHz) – KEK, Jlab, and SLAC.•RReplace the Data Object in the Gateway with the New Data Object for Higher Throughput and Greater Reliability- BESSY

•RRemove Array Size Limitations and String Length Limitations - LANL and ANL

•RReplace the Original Channel Access Server with the Portable Channel Access Server and New Data Object to Reduce Code Management Costs - LANL and ANL


The Port of the EPICS Database Makes Single The Port of the EPICS Database Makes Single

Box Systems PossibleBox Systems Possible

Field I/O

Field I/O Field I/O

Control System LAN/WAN

Gateway

Site LAN/WAN

Operating Systems:Linux, Windows, Solaris

I/O support:GPIB and Serial Devices so far….


Channel Access Client (CAC)Connection Data Transfers

WAN/LAN

Connection Data TransfersChannel Access Server (CAS)

DB Engine

Device Support

Driver Support

Generic Data Descriptor

Channel Access Client

Active X

Labview / Excel..

Access Lib

Any Data Store

I/O Controller Gateway Portable CAS PCAS - Windows

Archiving

Archive Access

Archive Viewing Archive AnalysisUser ToolsDM/MEDM/DM2K/EDM/JDMAlarm Handler / stripTool/knobManager

Connection Data TransfersPortable Channel Access Server (CAS)

Types

Connection Server

Program InterfacesC, C++, Fortran, JAVAIDL / Matlab / MathematicaActiveX / DDE / VisBasicSDDS / SAD / tcl / PERL / PythonState Notation Lang / FSQT

EPICS Has Well Defined Interfaces for EPICS Has Well Defined Interfaces for Extensions at all LevelsExtensions at all Levels


Extensions are Made and Maintained Extensions are Made and Maintained

Throughout the CollaborationThroughout the Collaboration•NNew Driver, Device, and Record support is developed at nearly every project that has used EPICS.•PProcess Database Configuration tools have been developed for graphical and relational representations at PSI, LANL and ANL.•DDisplay Managers have been developed at ORNL, Jlab, LANL, BESSY, and ANL.•SState Notation Language was developed at LANL and then extended and supported by first Keck and now SLAC.•TThe Alarm Manager is maintained by ANL.•DData Archiving and Viewing has been done in parallel by LANL, DESY, Jlab, SLAC, BESSY, ANL.•CClient connections to scripting languages Python, PERL, Tcl are available from KEKand LANL.•CClient connections to Matlab, Mathmatica, IDL, Active X (Labivew, Excel etc..) are supported by the APS Beamlines and LANL•SServer support to Active X (LabView, Excel etc..) is done by LANL.•SSupport for standard buses is available from ANL, LANL, BESSY, LBL, DESSY, KEK, BNL with the list maintained at LBL.•HHost Based Name Server – JLab


New Graphical Process Database New Graphical Process Database

Configuration Tool Done by JSI for PSIConfiguration Tool Done by JSI for PSI


New Process Database Configuration Tools New Process Database Configuration Tools

for Oracle Import Files and Allow Editingfor Oracle Import Files and Allow Editing


The Extensible Display Manager (EDM) from The Extensible Display Manager (EDM) from

ORNLORNL


Wide Area Network Support is Becoming More Wide Area Network Support is Becoming More

CommonplaceCommonplace•MThe MEDM Display Manager is in test at Jlab using a web aware file system to download displays and channel access client interface to communicate to the control system.

•A CORBA interface to the archiver data is being developed at Jlab.

•EElectronic Log Books with web browsing capability is available from Jlab.

•CChannel Archiver, configured and managed over a web interface, was developed at LANL.

•AWeb-based archive data viewing and export was developed at LANL.


Web Based Archive Retrieval is Used to Find Web Based Archive Retrieval is Used to Find

Data and Export in Other FormatsData and Export in Other Formats


Web Based Electronic Log Book from Web Based Electronic Log Book from

Jefferson LaboratoryJefferson Laboratory


Channel Access Protocol is Being Made Channel Access Protocol is Being Made

ExtendableExtendable•A A new data object was recently completed to enable the protocol to be extended.

•LLarge array support will be available this month in the embedded server, and this year in the portable server.

•EExtensions for notification on new classes of events – like metadata changes, related channel change, and timed monitors will be made with this new support.

•TThe current two servers will be replaced by one high performance, object oriented, flexible server reducing the time to implement new features.

•NNew and extended composite data structures can be supported that enable the creation of beam data, history data, and statistical data structures to support network based high level applications.


There is Increased Involvement of Industry in There is Increased Involvement of Industry in

the EPICS Communitythe EPICS Community•ALaboratories face tighter cost control and technical expertise is more difficult to find, so large budget peaks that occur during construction are managed with more industrial support.

•PPSI recently completed the SLS with the RF and LINAC being delivered by commercial companies complete with EPICS systems.

•SSNS will contract out the conventional facilities and have them delivered with an EPICS control system.

•AAt LANL we have had RF and vacuum systems delivered with PLC systems that are then integrated into EPICS with minimal effort.

•KKEK trained Mitsubishi to develop and maintain the KEKB control system with lab supervision.

•WWe hope to encourage more industrial support when EPICS is made open-source - in the very near future.


Some Aspects of the EPICS Approach Are Still Some Aspects of the EPICS Approach Are Still

Difficult for NewcomersDifficult for Newcomers •IIn EPICS, there is frequently more than one tool available to implement an aspect of the system. Deciding the correct approach is confusing for beginners.

•TThe distributed nature of the collaboration also presents no coherent set of documentation for new users – so much of the information is disseminated through collaboration meetings and personal contacts. There is a good guide at the LBL sight.

•TThe work of supporting new users is not funded by any organization – and as such, the ability to support this is limited to training workshops and documents that are written to support local groups.


The EPICS Collaboration Continues to Expand The EPICS Collaboration Continues to Expand Support for Physics ProjectsSupport for Physics Projects

•MModifications to the channel access protocol will enable protocol extensions to support network communication for high level physics applications.

•EEPICS should soon be open source with no licensing or secret handshake requirements.

•NNew Hardware and Software Platforms are tested and integrated by members of the collaboration to take advantage of the latest technology.

•WWeb based and wireless technology is being incorporated for improved operations.

•NNew tools continue to be developed that reduce the cost of developing and maintaining our systems.


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