Abstract: A field device of automation technology having a function for checking quality of a network connection includes an operating electronics and at least one communication interface for connecting to a communication network having one or more network participants and for building a communication connection, wherein a communication stack and a PHY are associated with the communication interface, wherein the communication stack and the PHY are embodied continually to gain and to store communication information regarding the communication connection, wherein the operating electronics is embodied to read out communication information from the communication stack and from the PHY, and by means of an algorithm to subject the communication information to computation and based on the result of the computation to classify a communication state.

Abstract: A work cabin having a front windowpane, which is to be introducible and fixable in the interior roof space of the cabin, and having roller bearings, which are laterally articulated in the vicinity of corner regions of the front windowpane and are guided in two U-shaped guide rails. Respective spring cable pulleys are disposed in extensions of upper portions of the guide rails remote from the closed position of the front windowpane. Cable ends of the pulleys are guided over guide rollers and are attached to lower poritons of the front windowpane. A shaft spans the upper corner regions of the front windowpane between the roller bearings at those locations, with a hand lever being provided on the shaft for rotating the same.