Patent ID: 8189350

Claim:
An input/output module for an automation device comprising: a housing having a lower part separable from an upper part; a first printed circuit board disposed on the lower part of the housing; a second printed circuit board disposed on the lower part of the housing and configured to connect signals from an input/output bus to the first printed circuit board; and an electronic subassembly for an input/output function of the input/output module including: a plurality of connection elements disposed on the first printed circuit board and configured to connect signal lines and process voltage lines, the plurality of connection elements being accessible from a front side of the upper part; and a plurality of optical waveguides disposed on the front side, wherein each one of the plurality of optical waveguides is assigned to a respective one of the plurality of connection elements and each waveguide is configured to display an operating state of at least one respective input/output channel of the input/output module.