EXTENDING THE CAPABILITIES OF SCADA - DEVICE MODELLING FOR THE LHC EXPERIMENTS
Laura del Caño · CERN Document Server (European Organization for Nuclear Research) · 2003
The JCOP Framework is one of the subprojects of the Joint COntrols Project (JCOP), which is a collaboration between the four LHC experiments and CERN. By sharing development, a reduction in the overall effort required to build and maintain the experiment control systems can be obtained. As such, the main aim of the Framework is to deliver a common set of software components, tools and guidelines that can be used by the LHC experiments to build their control systems. The Framework is based on the industrial Supervisory Control And Data Acquisition (SCADA) tool PVSS [1] for the supervisory layer; it extends the functionality provided by customizing it for the specifics of the LHC experiments. A part of this customization is the inclusion of devices commonly used in the experiments (e.g. high, low voltage supplies, and PLC devices). Access to an external configuration database is a further extension provided by the Framework. This paper first gives an overview of the PVSS capabilities, which are needed to understand the Framework development, described afterwards, and then introduces the Framework itself, its philosophy and its scope. The remainder of the paper concentrates on the device modelling (abstraction layer) added by the JCOP Framework as well as the configuration database subproject.