Tovar, EduardoVasques, Francisco2014-02-032014-02-0319980-7803-4503-7http://hdl.handle.net/10400.22/3611P-NET is a fieldbus industrial communication standard, which uses a Virtual Token Passing MAC mechanism. In this paper we establish pre-run-time schedulability conditions for supporting real-time traffic with P-NET. Essentially we provide formulae to evaluate the minimum message deadline, ensuring the transmission of real-time messages within a maximum time boundengjournal article10.1109/IECON.1998.724001