A network system of an error-safe automating system for the functional safe transmission of data between at least one functional safe producer of data and at least one functional safe consumer of data, wherein the functional safe producer (1, 13, P10, P11, P12, P13) is a network subscriber which is connected to a first network infrastructure and the functional safe consumer (2, 23, C20, C21) is a network subscriber which can be connected to the first network infrastructure or to a second network infrastructure, and wherein at least one of these functional safe producers is arranged for generating functional safe data for at least one of these functional safe consumers, and at least one of these functional safe consumers is arranged for functionally safe consuming data from at least one of these functional safe producers, comprising - a data memory to which data can be written and from which data can be read out, - and at least one first coupling unit (1a, 10a) and at least one second coupling unit (2a, 20a) with at least one interface (1a', 10a', 2a', 20a') respectively, - wherein at least one of these functional safe producers, which is arranged for generating data for at least one of these functional safe consumers, is connected to such a first coupling unit (1a, 10a) and this first coupling unit (1a, 10a) is arranged and designed to write, by its interface (1a', 10a') by establishing at least one write access connection to the data memory, data generated by this functional safe producer into the data memory which data can be identified as such, and - wherein at least one of these functional safe consumers, which is arranged for consuming data from at least one of the functional safe producers, is connected to such a second coupling unit (2a, 20a,) and this second coupling unit is arranged and designed to read, by its interface by establishing at least one read access connection to the data memory, data of the functional safe producer from the data memory, which data is written in an identifiable manner in this data memory as determined for this safe consumer wherein safety mechanisms concerning functional safety for the converting of error-recognizing measures regarding data to be transmitted between the functional safe producer and the functional safe consumer, are exclusively present in the safe producer and the safe consumer and/or wherein at least the conversion of error-recognizing measures regarding data to be transmitted between the functional safe producer and the functional safe consumer, takes place exclusively in the safe consumer. - a data memory to which data can be written and from which data can be read out, - and at least one first coupling unit (1a, 10a) and at least one second coupling unit (2a, 20a) with at least one interface (1a', 10a', 2a', 20a') respectively, - wherein at least one of these functional safe producers, which is arranged for generating data for at least one of these functional safe consumers, is connected to such a first coupling unit (1a, 10a) and this first coupling unit (1a, 10a) is arranged and designed to write, by its interface (1a', 10a') by establishing at least one write access connection to the data memory, data generated by this functional safe producer into the data memory which data can be identified as such, and - wherein at least one of these functional safe consumers, which is arranged for consuming data from at least one of the functional safe producers, is connected to such a second coupling unit (2a, 20a,) and this second coupling unit is arranged and designed to read, by its interface by establishing at least one read access connection to the data memory, data of the functional safe producer from the data memory, which data is written in an identifiable manner in this data memory as determined for this safe consumer wherein safety mechanisms concerning functional safety for the converting of error-recognizing measures regarding data to be transmitted between the functional safe producer and the functional safe consumer, are exclusively present in the safe producer and the safe consumer and/or wherein at least the conversion of error-recognizing measures regarding data to be transmitted between the functional safe producer and the functional safe consumer, takes place exclusively in the safe consumer.