A time-division multiplex method for serial data transmission includes executing a first priority resolution for messages to be transmitted by a plurality of stations on a communications channel and which are assigned to a first prefix, and transmitting a first data frame by a first station of the multiplicity of stations, wherein the first station transmits a first message with the first prefix and with the highest priority, during a predefined first access slot. The method also includes executing a second priority resolution for messages to be transmitted on the communications channel and which are assigned to a second prefix, and then transmitting of a second data frame by a second station of the plurality of stations, where the second station transmits a second message with the second prefix and with the highest priority of the second priority resolution, during a predefined second access slot.

A user station for a bus system and a method for broadband CAN communication are provided. The user station includes a control unit for controlling an access of the user station via a first bus system to a bus of a second bus system of the communication system, the first bus system being designed for a communication, in which at least at times an exclusive, collision-free access of one of at least two user stations of the communication system to a bus of the first bus system is ensured, and the bus of the second bus system having at least two channels, via which it is possible to transmit messages of the at least two user stations of the communication system in different separate frequency ranges temporally independently of one another.

A control apparatus that bidirectionally communicates with a control unit based on a preset time-sharing method includes: a plurality of devices each installed on a different substrate; a communication controller daisy-chained to the control unit via a bus line through which bidirectional communication of communication data is performed, the communication data having a data structure having a band in which data to be communicated between the plurality of devices is superimposable; and a cable configured to connect at least one device of the plurality of devices to the communication controller.

In a distributed I/O control system updating data through a network between a shared memory of a slave station performing input/output of data with plural input or output devices and a shared memory of the master station corresponding to the slave station's shared memory, the master station sets group information with respect to the input or output devices, and outputs, according to a cycle table, an input request frame specifying the shared memory in the slave station and the group information, and the slave station performs input/output of data with plural input or output devices, and determines whether an input request content specified by an input request frame from the master station is all information in the shared memory in the slave station, or information corresponding to the group information, to thereby transmit output data according to the input request content.

A communication device and method for operating a communication system for transmitting time-critical data, wherein a respective individual time window within predefined time intervals is specified for data flows assigned to selected control applications running on terminals, where time windows each have an individual cycle time that is a multiple of a general cycle time or corresponds to the general cycle time, first and second communication devices each check, for the selected control applications, whether a specified time window is available for data transmission, where information about a beginning of the time window within the predefined time intervals is in each case transmitted to the terminal upon which the respective selected control application is executing in the event of an available time window, and where data flows that are assigned to selected control applications are each transmitted according to the information about the beginning of the individual time window.

An operation method of a first communication node constituting a vehicle network includes transitioning an operation state of the first communication node to a wake-up state when a preconfigured event is detected; determining whether a physical layer collision avoidance (PLCA) function is deactivated; in response to determining that the PLCA function is deactivated, generating a message including an indicator indicating that the PLCA function is deactivated; and transmitting the message.

A control system, apparatus, and method are provided. In the control system, plural apparatuses in time synchronization with one another are connected to a network, and the network transfers a frame periodically exchanged by the apparatuses. The apparatuses include a control device and an apparatus controlled by the control device. Each apparatus in the control system is connected over the network, to a first apparatus that transmits a frame that arrives at each of the apparatuses and a second apparatus that receives a frame transmitted from each of the apparatuses. Each apparatus includes information on a frame transfer path and transfer timing based on a synchronous time. When a frame does not arrive at defined time through the transfer path and when a condition associated with a cycle is satisfied, one or more of the apparatuses is configured to transmit a resend request through the transfer path.

Provided is a management device or the like that can flexibly set a task cycle of a master device. The management device is a management device that manages a network including a master device and a slave device connected to the master device, and comprises: a transmission delay time prediction unit which predicts a transmission delay time on the basis of network configuration information and node information; a transmission delay time measurement unit which measures the transmission delay time in the network; and a transmission delay time setting unit which presents to the user, a predicted value predicted by the transmission delay time prediction unit and a measured value measured by the transmission delay time measurement unit, and sets a cycle setting transmission delay time for setting a task cycle in which the master device transmits a signal to the slave device, according to the selection operation of the user.

There is described an electrical cabinet for a traffic signaling system. The electrical cabinet generally has a housing; an input encoder, the input encoder having input ports receiving input signals carrying states associated with input devices of the traffic signaling system, a serial encoding circuit serially encoding the states of the input signals into a headerless signal, the headerless signal beginning with a first time slot and ending with a last time slot temporally spaced apart from the first time slot, the time slots carrying the states of the input signals, and an output port; and a traffic light controller having a serial decoding circuit receiving the headerless signal and serially decoding the headerless signal to retrieve the states of the input signals carried by the time slots of the headerless signal, the traffic light controller controlling the traffic signaling system based on the retrieved states.

Disclosed herein are two-wire communication systems and applications thereof. In some embodiments, a slave node transceiver for low latency communication may include upstream transceiver circuitry to receive a first signal transmitted over a two-wire bus from an upstream device and to provide a second signal over the two-wire bus to the upstream device; downstream transceiver circuitry to provide a third signal downstream over the two-wire bus toward a downstream device and to receive a fourth signal over the two-wire bus from the downstream device; and clock circuitry to generate a clock signal at the slave node transceiver based on a preamble of a synchronization control frame in the first signal, wherein timing of the receipt and provision of signals over the two-wire bus by the node transceiver is based on the clock signal.