Abstract: A connection adapter for transmitting signals of a programmable logic controller having a signal interface with electrical contact pins arranged in rows includes contact terminals for electrically contacting the electrical contact pins of the signal interface, each contact terminal being receiving one electrical contact pin of the signal interface; contact chambers for accommodating the contact terminals, each contact terminal being arranged in one contact chamber, the contact chambers being arranged in rows, with insulating elements being arranged between adjacent contact chambers; and a housing in which the contact terminals and the contact chambers are received, the housing being closed and electrically insulated.

Abstract: The invention relates to a coding system comprising at least one assembly of a plurality of individual wires, wherein one end of each individual wire is connected to a common adapter which is to be connected to an I/O module of an automation device for coupling an external device to a control unit of an automation system, and wherein the assembly of individual wires is bundled into at least two cables emanating from the common adapter, and is color-coded.