Test bed of control system using multimedia technology at PLS

We have developed the test bed of control system for the Pohang Light Source (PLS) by using multimedia technologies. This test bed consists of three parts: a man-machine interface (MMI) with media data management, a data acquisition system, and a networking system. The MMI that contains specific application software is developed with an application program interface and a multimedia user interface toolkit. We use 100 Mbps Ethernet as a network system and a commercial database named ObjectStore to store data. Several VME systems with OS-9 operating system and PLC systems are used in the data acquisition layer. We present the result of test bed development.