Patent ID: 8180940
Filing Date: 2012-05-15
Classification: G05B,H04L

Abstract:
1. A method for the transmission of cyclic and acyclic data by means of a transmission channel between at least two user devices connected to the transmission channel, with a protocol-specific cyclic data transmission being carried out at least between one user device functioning as a master and at least one user device functioning as a slave, the method comprising: checking, during an impending transmission cycle, data to be transmitted against corresponding data of a preceding cycle for redundancy and currency; and upon detection of an impending transmission cycle for which redundant data without new information content is provided, inserting acyclic data in lieu of said data in the data field provided for said data; wherein an error is recognized if no error-free cyclic data exchange is activated within a predetermined time period and a pre-parameterized error process is commenced.