Patent ID: 7561392
Filing Date: 2009-07-14
Classification: G05B,H02H

Abstract:
1. A data transmission device with at least one data adaptation device and one data distributing device, the data transmission device being connected between at least one process control computer arranged in a non-Ex area and field units connected thereto via a bus system, wherein the process control computer and field units are parts of a process control system and the data transmission device is, in particular, intrinsically safe, and arranged in an Ex area, wherein the data adaptation device and supply devices assigned thereto are formed so that they are explosion-proof and each supply device is connected to the data distributing device via an explosion-proof line, wherein either the data distributing device or the field units connected thereto, which are also arranged in the Ex area, have a barrier device for limiting applied power, which barrier device is arranged in the Ex area.