Siemens Aktiengesellschaft

Kurt Balzer

Siegfried Morlock

Michael Abert

A device for encoding plug-in modules reliably prevents a plug-in module with a 24 V direct voltage supply from being inserted directly to the right of a plug-in module with a 230 V alternating voltage supply in a device for connecting external lines fitted with equidistant, adjacent receptacles for plug-in modules. However, this is possible on the left side, and plug-in modules of the same type can be inserted next to each other in any combination.

Arrangement for coded and uncoded plug-in modules and device for connecting external lines using the arrangement

A device for the coding of plug receptacles in a support unit for electronic modules is described. Coding slides having a pin are provided on the support unit for each plug receptacle so that only those modules having a recess for the pin corresponding to a particular position of the coding slide can be inserted into the particular plug receptacle. This prevents, for example, modules with 24 V direct current supply from being inserted into plug receptacles wired for 230 V alternating current and vice versa.

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Hagenbach, Germany

Kurt Balzer