Author(s)

Mohammad A. K. Alia, Tariq M. Younes, Mohammad Abu Zalata

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This research is a continuation to our work which was published in [1]. Eight different timing VIs are designed and tested. These include ON-Delay, OFF-Delay, Single Shot, Retriggerable Monostable, and Accumulative software-based timers. Using hardware programmable counter/timer chip (DAQ-STC-24bit) and PCI MIO-16E-1 DAQ board, another two precise timers are designed. At the end of the paper, for illustration purposes, an electro-pneumatic drive system was developed and controlled utilizing designed on-delay timers VI functions. Results of experiment show complete coincidence between the PLC-based control and Virtual PLC-based program results.

PLC, Virtual PLC, LabVIEW, Programmable Timers

Alia, M. , Younes, T. and Zalata, M. (2011) Development of Equivalent Virtual Instruments to PLC Functions and Networks. Journal of Software Engineering and Applications, 4, 172-180. doi: 10.4236/jsea.2011.43019.