Advanced Light Source control system upgrade - Intelligent local controller redesign

As part of the control system upgrade at the Advanced Light Source (ALS) the existing intelligent local controller (ILC) modules are being replaced. These modules provide real-time updates of control setpoints and monitored values. This paper describes the architecture and performance of 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. This paper presents results of timing and throughput tests of a prototype module as well as a detailed description of the hardware and software design.