Patent ID: 6347252
Filing Date: 2002-02-12
Classification: G05B,Y02P

Abstract:
A control and data transmission installation, including:a serial field bus; and a master control device and a plurality of bus subscribers connected to the serial field bus, wherein the master control device includes one of a set of safety-related devices, each of the bus subscribers includes another one of the set of safety-related devices, and the safety-related devices are configured to carry out predetermined safety functions and to communicate with each other via the serial field bus; wherein each of the bus subscribers is connected to the serial field bus by a bus connecting device; wherein the bus connecting devices transmit safety-related data which are to be exchanged between the safety-related devices and which represent the safety condition of the respective bus subscribers via the serial field bus in useful data fields of predetermined data frames; wherein said one of the safety-related devices included in the master control device has a receiving device for receiving the safety-related data of each of the bus subscribers, an evaluation device for evaluating the received safety-related data and a device which, in response to the evaluated data, produces new safety-related data which are intended for the respective bus subscriber and which correspond to a predetermined safety function; wherein each of the safety-related devices has at least one input connected to a monitoring device; wherein said each of the safety-related devices is configured to negate an output signal of the monitoring device and to produce from the output signal and/or its negated output signal an item of check information representing the safety-related data to be transmitted; wherein the receiving device is adapted to receive the safety-related data, the negated data thereof and the check information; and wherein the producing device is adapted to produce the new safety-related data, the negated data thereof and a new item of check information.