A base module for a control-cabinet system includes a housing with a first housing face and further housing faces, the first housing face having a grid of openings. The housing has connection elements for functional modules, the connection elements each being arranged in the region of the openings of the first housing face, the connection elements comprising data connections, extra-low voltage connections and low-voltage connections. The data connections are interconnected by a data line of the base module and a field-bus connection is provided for the data line, where the data line is arranged within the housing. An extra-low voltage line and a low voltage line are arranged within the housing, where the extra-low voltage line is connected to the extra-low voltage connections and the low voltage line is connected to the low voltage connections.

An electronic device includes: a housing which has two side walls which are spaced apart from one another along an apposition direction and form an accommodation space between them; a printed circuit board which is insertable into the accommodating space of the housing along an insertion direction pointing transversely to the apposition direction and, in a mounting position, is accommodated in the accommodating space in a position perpendicular to the apposition direction and has a side edge extending along the insertion direction; and at least one attachment part which has at least one engagement receptacle by which the at least one attachment part is attachable to the side edge of the printed circuit board and, in an attached position, is connected to the printed circuit board.

A modular system for producing an electronic device includes: a housing, which forms an accommodating space; a printed circuit board which is insertable along an insertion direction into the accommodating space of the housing and, in a mounting position, is accommodated in the accommodating space; and a plurality of attachment parts, which are connectable to the printed circuit board and which, when viewed along the insertion direction, each have a division corresponding to a predetermined smallest dividing unit or an integral multiple of the predetermined smallest dividing unit. Each attachment part has a first guide device for guiding on a second guide device of the housing and a combination of attachment parts is connectable to the printed circuit board in a manner arranged next to one another along the insertion direction such that when the printed circuit board is inserted into the accommodating space, the combination is guided.

An I/O system having redundant removable and/or replaceable components. Each of the removable/replaceable components can be removed by displacement parallel to a common axis. An I/O device having an I/O base with a lock-out toggle to prevent installation of one or more I/O modules to the I/O base unless a ground screw has been secured to supporting structure.

A field device I/O connector includes a base and an I/O module removably mounted on the base for transmitting I/O signals along an I/O channel. A set of electrical connectors mounted on the base connect the base to a field device. The electrical connectors, the base, and the I/O module mounted on the base cooperate to define the I/O channel. The I/O channel includes a conversion circuit to convert between I/O signals and a digital data format output from the field device I/O connector. The base and I/O module also cooperate to define a diagnostic circuit connected to the portion of the I/O channel extending through the I/O module. The diagnostic circuit extends to a diagnostic logic circuit that may be included on the base, in the I/O module, or away from the field device I/O connector.

A cable fixing accessory includes: a cylinder segment having a surface with a predefined radius of curvature. The surface of the cylinder segment bends a cable having an electrically conductive core at least partially around the surface of the cylinder segment. The radius of curvature of a portion of the surface of the cylinder segment, which has direct contact with the cable, is greater than or equal to six times a diameter of the electrically conductive core of the cable.

An I/O system having redundant removable and/or replaceable components. Each of the removable/replaceable components can be removed by displacement parallel to a common axis. An I/O device having an I/O base with a lock-out toggle to prevent installation of one or more I/O modules to the I/O base unless a ground screw has been secured to supporting structure.

An input/output (I/O) device for a distributed modular I/O system includes a base adapted to be connected to an associated support structure. A terminal block is connected to the base and includes a plurality of wiring connections adapted to be connected to field wiring of an associated controlled system. The I/O device further includes first and second I/O modules each including a plurality of removable single-channel I/O submodules that are each releasably connected to the base and each configured for a select I/O operation for input and output of data relative to the associated controlled system. One or more pairs of the single-channel I/O submodules can be configured to be redundant within or between the first and second I/O modules. Each of the single-channel I/O submodules is operatively connected to wiring connections of the terminal block through the base. The I/O device further includes first and second network switches connected to the base. The first and second network switches are adapted to be respectively connected to first and second backplane circuits. The I/O device further includes first and second system modules connected to the base and each respectively connected to both of the first and second network switches. The first and second system modules are also each respectively operatively connected to all of the removable single-channel I/O submodules of both of the first and second I/O modules such that the first and second system modules control communication of I/O data between the first and second network switches and the single-channel I/O submodules.

An I/O system having redundant removable and/or replaceable components. Each of the removable/replaceable components can be removed by displacement parallel to a common axis. An I/O device having an I/O base with a lock-out toggle to prevent installation of one or more I/O modules to the I/O base unless a ground screw has been secured to supporting structure.

A communication module for a communication or automation device includes a housing having a connection region that can be brought into contact with a base module of the communication or automation device, wherein centering pins of the connection region are insertable into corresponding receptacles in the base module, a fastening screw having a threaded section penetrates the housing between the centering pins, where the threaded section of the fastening screw is screwable into a threaded hole in the base module, and a passage for receiving the fastening screw is arranged substantially centrally in the housing and extends at right angles to the connection region, the fastening screw has a driver ring connected to it that surrounds a section of a shaft of the fastening screw and where, along the passage, a cutout is provided in the housing for the driver ring that is axially displaceable inside the cutout.