Remote Device Access in the New CERN Accelerator Controls Middleware

Details Remote Device Access in the New CERN Accelerator Controls Middleware Remote Device Access in the New CERN Accelerator Controls Middleware

2001-11-22

arxiv.org/abs/physics/0111166v1

eConf C011127 (2001) THAP003

Physics

Accelerator Physics

Presented at ICALEPCS 2002, November 27-30, 2001, San Jose, CA (THAP003)

Scientific paper

This paper presents the Remote Device Access (RDA) package developed at CERN in the framework of the joint PS/SL Controls Middleware project. The package design reflects the Accelerator Device Model in which devices, named entities in the control system, can be controlled via properties. RDA implements this model in a distributed environment with devices residing in servers that can run anywhere in the controls network. It provides a location-independent and reliable access to the devices from control programs. By invoking the device access methods, clients can read, write and subscribe to device property values. We describe the architecture and design of RDA, its API, and CORBA-based implementations in Java and C++. First applications of RDA in the CERN accelerator control systems are described as well.

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