A slave device for IO-Link communication with a master device, wherein the master device and the slave device operate on a common basic timing, the slave device including at least one Universal Asynchronous Receiver Transmitter (UART) module configured to detect an INIT request sent from the master device during communication setup, calculate an actual timing of the master device from the INIT request and correct an initial timing of the slave device to an actual timing of the slave device based on the actual timing of the master device.

Systems and methods for setting up and operating a motor control system are provided. Such systems and methods can include a parent device that includes a digital library of control commands and a child device. A child device can transmit a unique identification code to the parent device and the parent device can identify, from the digital library, a group of control commands specific to the child device using the unique identification code, generate an address for the child device, and transmit a copy of the address to the child device for storage thereon. The parent device can transmit a control signal that includes the address and one of the control commands from the first group to the child device and, responsive thereto, the child device can perform an action when the address matches the copy of the address stored on the child device.

Techniques for group control using service data objects (SDO) are disclosed. A device controller is configured to perform operations including: receiving, from device controllers that are configured to control devices so that the devices operate based on a shared set point, SDO messages using an SDO protocol; determining that the device controller is a master device controller for the device controllers, based at least on the SDO messages; and sending a setpoint update message including a modified value of the shared set point, using the SDO protocol, to slave device controllers in the device controllers, wherein a slave device controller in the slave device controllers is configured to adjust operation of at least one slave device in the devices, based at least on the setpoint update message.

A system includes a field device and a control device. The field device includes a field device controller and a field device transmitter. The control device includes a control device controller and a control device transmitter. The field device transmitter and the control device transmitter have a transmission path between them. The field device controller and the control device controller are adapted for bidirectional transmission of messages between one another according to a communication protocol via the field device transmitter, the transmission path, and the control device transmitter. The communication protocol implements the transmission of messages with a master role and a slave role. The field device controller implements the master role and the control device controller implements the slave role. A related method is also disclosed.

A time synchronization system includes a master and slave devices connected to each other via a data bus and a signal line dedicated to transmission of a fixed-period signal. The master device transmits the fixed-period signal through the signal line regularly at a transmission period, and transmits start time information indicating a transmission start time at which transmission of the fixed-period signal is started and transmission period information indicating the transmission period for the fixed-period signal through the data bus. The slave device counts a number of times the fixed-period signal is received and calculates, as a current time in the master device, a transmission time at which the master device transmits the fixed-period signal based on the number of times the fixed-period signal is received. The slave device corrects the time to the calculated current time in the master device.

A high-frequency electrotome control system and a control method thereof are disclosed. The high-frequency electrotome control system includes an electrotome activation pedal, a master-slave control system, and a high-frequency electrotome activation hardware arbitration module. The high-frequency electrotome activation hardware arbitration module is connected with the electrotome activation pedal and configured to detect the state of the electrotome activation pedal. The high-frequency electrotome activation hardware arbitration module is connected with the master-slave control system and configured to activate an electrotome control output based on the state of the electrotome activation pedal and an electrotome control signal from the master-slave control system.

An actuator in a HVAC system includes a mechanical transducer, a processing circuit, a wireless transceiver, and a power circuit. The processing circuit includes a processor and memory and is configured to operate the mechanical transducer according to a control program stored in the memory. The wireless transceiver is configured to facilitate bidirectional wireless data communications between the processing circuit and an external device. The power circuit is configured to draw power from a wireless signal received via the wireless transceiver and power the processing circuit and the wireless transceiver using the drawn power. The processing circuit is configured to use the power drawn from the wireless signal to wirelessly transmit data stored in the memory of the actuator to the external device via the wireless transceiver, wirelessly receive data from the external device via the wireless transceiver, and store the data received from the external device in the memory.

An appliance is provided. The appliance includes a transceiver, and a processor configured to, based on an external appliance being identified to be adjacent to the appliance, receive arrangement state information of the external appliance through the transceiver, identify whether the appliance is a slave device controlled by the external appliance or a master device to control the external appliance based on the arrangement state information of the external appliance and arrangement state information of the appliance, based on the appliance being identified as the slave device, transmit a control authority to the external appliance through the transceiver, and based on the appliance being identified as the master device, request the control authority from the external appliance identified as the slave device through the transceiver.

A list distribution station of a communication station includes processing circuitry to record, in a memory, a grand master list containing a station code of a grand master and a station code of a communication station synchronized with the grand master, and receive a priority notification frame which contains, as a sender station code, a station code of a present grand master in the communication system. The processing circuitry is further included to decide, when notified of the station code of the present grand master, whether or not to update the grand master list based on the notified station code of the present grand master and the grand master list, and upon having decided to update the grand master list, to update the station code of the present grand master station on the grand master list with the notified station code of the present grand master station.

A list distribution station of a communication station includes processing circuitry to record, in a memory, a grand master list containing a station code of a grand master and a station code of a communication station synchronized with the grand master, and receive a priority notification frame which contains, as a sender station code, a station code of a present grand master in the communication system. The processing circuitry is further included to decide, when notified of the station code of the present grand master, whether or not to update the grand master list based on the notified station code of the present grand master and the grand master list, and upon having decided to update the grand master list, to update the station code of the present grand master station on the grand master list with the notified station code of the present grand master station.