Access to NSTX EPICS Data using the PPPL Linux Cluster 'portal or nstxpool'

Unix has been the most popular 'host' platform in the EPICS community over the past ten years.  A limited set of  Channel Access Client Software has been made available on PPPL's 'portal'  cluster.   Some clients, such as medm,  use the x-windows software for the display/GUI/HMI. For these tools, login to the PPPL unix cluster using a computer which has X-server software, such as Windows with Exceed or Cygwin/X(free), or MacOS 10.x, or a system running Linux.

• Viewing NSTX Status using a web browser
• Viewing NSTX EPICS displays using medm
• Viewing the NSTX Shot Clock using medm
• Viewing Current Trend Data using the StripTool
• Viewing Historical Trended Data using the ArchiveViewer or MDSplus
• Read and write individual EPICS records using IDL
• Using 'C' programs to r/w EPICS records
  •     There are several alternatives here.  You can use the Channel Access function call library, or EZCA.
• Using Unix commands to r/w records

There are several  unix shell commands that can access EPICS data.  These commands can be included in scripts and CRON jobs.

To retrieve an EPICS data value, such as the shot number, use the caget  command:

  unix% caget ck_currshotSEL

  (reply) ck_currshotSEL 109732
 

Page edited 06 Jun 2008 by Paul Sichta [psichta@pppl.gov]