Component for a machine or industrial plant and method for controlling a component in a machine or industrial plant

摘要

There is provided a component for a machine or industrial plant and a method for controlling a component in a machine or industrial plant. The component comprises a network communication device for controlling a transmission of data in a data network of the machine or industrial plant, in which data packets with a predetermined packet length are cyclically transmitted between the component and at least one further component of the machine or the industrial plant without being in a transmission cycle a retransmission of time-critical data of the data packet is possible, wherein the network communication device tolerates any packet error in a received data packet sent in the preceding transmission cycle, and signals the presence or absence of a packet error in the subsequent transmission cycle to the at least one further component; wherein the network communication device determines whether the at least one further component for a data packet sent by the component in the preceding transmission cycle Packet error has signaled or not, and wherein the network communication device, depending on the determination result in the data packet to be transmitted in the following transmission cycle, adjusts the number of redundancy data which increase a correction probability of bit errors in the time-critical data to be transmitted.