Author: Portmann, G.J.
Paper Title Page
TUPPC098 Advanced Light Source Control System Upgrade – Intelligent Local Controller Replacement 809
 
  • W.E. Norum, R.E. Lellinger, G.J. Portmann
    LBNL, Berkeley, California, USA
 
  Funding: Work supported by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231
As part of the control system upgrade at the Advanced Light Source (ALS) the existing intelligent local controller (ILC) modules have been replaced. These remote input/output modules provide real-time updates of control setpoints and monitored values. This paper describes the 'ILC Replacement Modules' which have been developed to take on the duties of the existing modules. The new modules use a 100BaseT network connection to communicate with the ALS Experimental Physics and Industrial Control System (EPICS) and are based on a commercial FPGA evaluation board running a microcontroller-like application. In addition to providing remote ana log and digital input/output points the replacement modules also provide some rudimentary logic operations, analog slew rate limiting and accurate time stamping of acquired data. Results of extensive performance testing and experience gained now that the modules have been in service for several months are presented.