SISTEM PENGONTROLAN DAN PENGAWASAN TERPUSAT DENGAN TRANSMISI DATA REAL TIME MEMANFAATKAN SHARED VARIABLE PADA LABVIEW

Needs of industry requires a complex system that cooperate in an integrative framework that has a virtual instrumentation system at the sub-system. In this case each sub-system control and monitoring needs to be done centrally to ensure reliability and efficiency performance of the control system itself. However, these systems are often difficult to implement without the high cost and process development will be required. So that an alternative solution is needed to build a system of measurement and control in real time The study was conducted by developing virtual instrumentation applications that can simultaneously can perform data communication on each computer that is incorporated in the network. This ability is obtained with the use of LabVIEW shared variables and features that allow an application VI (Virtual Instrument) on a computer do the reading data written by other computers so as to create a data communication mechanism. with the communication of data that exists in a scheme then the client and server to server computer controlling the hardware connected to the client computer. Results from this study is that there is a valid mechanism for communication of data between applications that utilize VI LabVIEW shared variable. Scheme developed to position applications on the server side serves as a control center for various activities that exist on the client computer. It is represented by the DC motor speed control and data acquisition temperature remotely from the application server which is physically performed by the hardware connected to the client computer. Also the administrative steps that can be done during the communication process runs