Industrial Communication Guide

IEC 61131 Standard for the basic principles of programmable logic controllers; IEC 61131-3 describes programming models. IEC 61158 Standard containing the technological description of 18 different fieldbuses. Input-output-model Describes the connection between input, function (information pro- cessing) and the output created from this.

Fiber optics Fiber optics (FO) allows the transmission of light of differing wa- velengths; the cables are made of glass fiber or synthetic fiber. A distinction is drawn between mono/single-mode and multi-mode FO. Single-mode FO only transmits light of one wavelength, while multi-mode FO is able to transmit light of different wavelengths. FO enables much higher bandwidths than copper and is also less sensi- tive to EMC interference. Field level Level of a production facility at which all sensors and actuators are to be found. Fieldbus A fieldbus is defined as a bus system that connects sensors and ac- tuators to a controller/PLC for the purpose of information exchange. Function A processing specification which creates output values from input values. GOF GOF stands for Glass Optical Fiber. The term “glass fiber” generally refers to this type of fiber. GOF cannot be processed by hand – a special splicing robot is required. GOF has very low attenuation and therefore a high data rate and range.

Input signal Input of a control system

Intelligent station This station exchanges data with the master station. To a certain ex- tent it can process values (e.g. convert analog measurement values into digital values) and forward them to its own local interfaces (e.g. serial connection).

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