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CSS Synoptic Display Comments

SDS is a generic display manager for CSS, offering a comparison of EPICS tools such as edd/dm, medm, dm2k, and edm. With a flexible and dynamic interface, SDS allows for easy customization and access to various data layers. Explore the basics, compare with EDM, and discover the usability enhancements for control system displays. Consider if SDS is the right choice for your project.

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CSS Synoptic Display Comments

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  1. CSS Synoptic Display Comments Kay Kasemir, kasemirk@ornl.gov July 2009

  2. Synoptic Display Studio (SDS) • Generic display manager for CSS • Compare EPICS edd/dm, medm, dm2k, edm, … • Great Ideas • Generic Data Access Layer (DAL) for EPICS, Tine, Doocs, Tango, Simulated PVs, … • Every property ofevery widget can be‘dynamic’ • “Label” with static “Text” • “Label” where “Text” updateswith received PV data

  3. Use SDS as OPI for new projects?

  4. Basics EDM vs. SDS • Java, SWT • Windows, Linux GTK, Mac OS X • DAL • Channel Access • Proposed 2004 • Ongoing development/bug fixes • C++, Linux, X11 • Motif • PV Layer • Channel Access • Started 1999 • Operational at SNS since ~2000, stable

  5. Basic Editing: EDM vs. SDS • … plus rulers • Familiar drawing program GUI (toolbar, …) • When selecting multiple items, all common properties are easily configured • Layer support • Move, copy, resize, group, align, snap-to-grid • Efficient yet less intuitive • When editing multiple items, setting common properties is limited and awkward

  6. Usability for Control System Sisplays • EDM: Add Text Update • Select area, pick Text Update, enter PV Name, OK • All EDM widgets with PV connectivity will by default • Show PV name on middle-button click • Show PV severity via e.g. border color • Use PV’s display limits as default range for “meter” widget etc. • Indicate ‘disconnected’ state via e.g. white-out appearance • In SDS, this is accomplished via dynamic properties • ‘Text’: Link to PV’s value • Border color: Link to PV’s severity and connection state • Tool Tip: Show PV’s name • Very involved when done manually • “Initializers” are meant to automate this • So far no agreement on handling of severity, ‘disconnected’ state

  7. Summary EDM • Used at SNS and other sites operationally for years • It is getting old? Should a new project still consider it? SDS • used at DESY • SNS so far considers it under development, not ready • Do you want to collaborate? Or are there fundamental problems?

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