Abstract: A a converter has a head part (1), which can be connected to an external data bus, and one or more connection modules (2), which can be connected to it by way of plug-in mounting in the form of rows. The head part (1) has a plug-in connection (3) with plug-in contacts (4) associated with an internal data bus; each connector module (2) has a counter plug-in connection (5) matching the plug-in connection (3) of the head part (1); counter plug-in contacts (6) of the counter plug-in connection (5) are connected to circuit connection contacts (7) for the connection of a circuit support (8) having an electronic circuit and to plug-in contacts (4) for the connection of the counter plug-in contacts (6) of a further connection module (2); each connection module (2) has at least one device connection (9) for the connection of an actuator or a sensor, which communicates via a bus.

Abstract: The invention relates to a converter with a head part (1), which can be connected to an external data bus, and one or more connection module (2), which can be connected to it by way of plug-in mounting in the form of rows, with the following features: the head part (1) has a plug-in connection (3) with plug-in contacts (4) associated with an internal data bus; each connector module (2) has a counter plug-in connection (5) matching the plug-in connection (3) of the head part (1); counter plug-in contacts (6) of the counter plug-in connection (5) are connected to circuit connection contacts (7) for the connection of a circuit support (8) having an electronic circuit and to plug-in contacts (4) for the connection of the counter plug-in contacts (6) of a further connection module (2); each connection module (2) has at least one device connection (9) for the connection of an actuator or a sensor, which communicates via the internal and external bus with a control device which can be connected to the external bus.

Abstract: An electronic proximity switch orientatable in various response directions includes a sensor housing, a rotatable angle member and a connecting piece, with the rotatable angle member being selectively attachable to the sensor housing in two different positions. A base member is provided which is adapted to be mounted to the rotatable angle member at an installation site, with the base member being selectively lockable in at least four rotary positions. The entire electronic circuitry is accommodated in the sensor housing and the base member is constructed as an assembly block, with a plug being rotatably disposed within the connecting piece. The assembly block carries a locking fastener which is receivable in passages provided in the connecting piece so that the rotary position of the rotatable angle member can be rotatably locked in a stepwise fashion and a rotary position of a plug can be rotatably locked in an infinitely variable manner.

Abstract: An inductive proximity switch including an oscillator circuit with a frequency resonant circuit (1) determining the frequency and with an impedance member (7) determining the amplification, this impedance member containing an impedance resonant circuit with a sensor coil (9) that can be influenced by the approach of a metallic trigger. In order to provide that the proximity switch has the same activating range for ferrous and nonferrous trigger metals, the resonant frequency (f.sub.o) of the frequency resonant circuit (1) and the critical impedance value (Z.sub.o) of the impedance member (7) are tuned, according to this invention, to the coordinates (f.sub.o,Z.sub.o) of the point of intersection (P.sub.o) of the impedance/frequency characteristics (II, III), resulting for respectively identical activating range, for an NF trigger and for an FE trigger.

Abstract: A proximity switch with a noncontact effect which includes a plug-in adapter having a plug-in socket for the sensor part equipped with a plug-in cable, a ac/dc converter with a core coil connected in front thereof being arranged in the adapter. The adapter is associated with a dc/ac converter located in the basic housing of the main part and includes a core coil connected thereafter. The core coil lie in each case behind the mounting sides of the basic housing and plug-in adapter and transmit by inductive coupling the energy from the main part to the connected sensor part and the signals from the sensor part to the main part.

Abstract: A proximity switch operating on a non-contact basis including a terminal-side main part set in a base housing and a sensor part set in a probe. To enable a selection of the response direction, the probe may be adjusted in different positions on the base housing, to which the probe is designed or arranged as a component insulated on all sides which, by way of individual in-built core coils is inductively coupled with a core coil set in the base housing.