Abstract: A module unit for connecting a data bus participant to a local bus. The module unit has a first input interface and a first output interface which can be connected to the local bus, a first data connection interface which can be connected to the data bus participant, and a first switch which is adapted so as to assume a first or a second switch state depending on a control input from the data bus participant, connect the first input interface to the first output interface in the first switch state, and connect the first data connection interface to the first output interface in the second switch state.

Abstract: A module unit for connecting a data bus participant to a local bus. The module unit has a first input interface and a first output interface which can be connected to the local bus, a first data connection interface which can be connected to the data bus participant, and a first switch which is adapted so as to assume a first or a second switch state depending on a control input from the data bus participant, connect the first input interface to the first output interface in the first switch state, and connect the first data connection interface to the first output interface in the second switch state.

Abstract: A module unit for connecting a data bus participant to a local bus. The module unit has a first input interface and a first output interface which can be connected to the local bus, a first data connection interface which can be connected to the data bus participant, and a first switch which is adapted so as to assume a first or a second switch state depending on a control input from the data bus participant, connect the first input interface to the first output interface in the first switch state, and connect the first data connection interface to the first output interface in the second switch state.

Abstract: A module having an input configured to connect a sensor and having an indicator configured to optically indicate a physical state of the sensor. The module is configured to transmit a logical signal associated with the physical state or an inverted logical signal of the sensor to a higher-level unit and to receive a control value from the higher-level unit. The module is configured to evaluate the control value and to determine, on the basis of the control value, whether the value of the logical sensor signal or the inverted logical sensor signal is to be used for the optical indication of the physical state of the sensor.

Abstract: A module having an input configured to connect a sensor and having an indicator configured to optically indicate a physical state of the sensor. The module is configured to transmit a logical signal associated with the physical state or an inverted logical signal of the sensor to a higher-level unit and to receive a control value from the higher-level unit. The module is configured to evaluate the control value and to determine, on the basis of the control value, whether the value of the logical sensor signal or the inverted logical sensor signal is to be used for the optical indication of the physical state of the sensor.

Abstract: A module unit for connecting a data bus participant to a local bus. The module unit has a first input interface and a first output interface which can be connected to the local bus, a first data connection interface which can be connected to the data bus participant, and a first switch which is adapted so as to assume a first or a second switch state depending on a control input from the data bus participant, connect the first input interface to the first output interface in the first switch state, and connect the first data connection interface to the first output interface in the second switch state.

Abstract: The present invention relates to a switching system for interconnecting a plurality of computer user terminals or workstations each having user interface devices, including a keyboard, a video display unit, and a cursor control device or mouse (KVM), with a plurality of computers in a computer network, allowing a user to access any one or more of said computers from the user interface devices of a single terminal or workstation. It is denoted “high end” because of the potentially large number of computers which may be interconnected with the system.