In one embodiment a control unit for managing an HVAC system includes an RS-BUS interface that may communicate with one or more HVAC units. A plurality of universal asynchronous receiver/transmitter (UART) ports, wherein at least one of the UART ports may communicate with an interactive display using an RS-485 communication protocol, A secure digital input output (SDIO) port configured to interface with a Wi-Fi module, wherein the Wi-Fi module is operable to communicate with a plurality of HVAC sensors, wherein the plurality of HVAC sensors operable to measure temperature. A processor that may receive, from the SDIO port, a sensor reading from one of the plurality of HVAC sensors, the sensor reading formatted according to an 802.11 Wi-Fi protocol. The processor may then convert the sensor reading from the 802.11 Wi-Fi protocol into an RS-BUS protocol, the RS-BUS protocol may control the one or more HVAC units. The processor may also convert the sensor reading from the 802.11 Wi-Fi protocol into the RS-485 communication protocol that may communicate with the interactive display. The processor may then transmit the sensor reading in the RS-485 communication protocol to the interactive display using the at least one UART port. The processor may also transmit the RS-BUS protocol to the one or more HVAC units using the RS-BUS interface.

In one embodiment, a system for replicating settings in an HVAC network includes a first control unit including a first internal clock, the first control unit communicatively coupled to a first plurality of HVAC units and a first interactive display. The system may also include a second control unit comprising a second internal clock, the second control unit communicatively coupled to a second plurality of HVAC units and a second interactive display. The system may include a communications network, wherein the first control unit detects the second control unit over the communications network and the first Internal clock and the second internal clock have the same time. The first control unit may also receive a first settings update from the second control unit, determine that the first settings update is associated with a changed universal setting comprising a first setting time, compare the first setting time of the changed universal setting to a stored setting time of an existing universal setting, determine that the first setting time is more recent than the stored setting time, and update the existing universal setting with the changed universal setting.

In one embodiment, an HVAC system includes a first control unit communicatively coupled to a first plurality of HVAC units and a first interactive display. A second control unit communicatively coupled to a second plurality of HVAC units and a second interactive display. The first control unit is operable to detect and connect to the second control unit using a Wi-Fi direct protocol to create an HVAC control network that is designated as a primary communications network. The first control unit further operable to detect a Wi-Fi network including a wireless access point. The first control unit operable to re-designate the HVAC control network as a secondary communications network and to designate the Wi-Fi network as the primary communications network. The first control unit may also detect and connect to the second control unit over the Wi-Fi network, wherein the first control unit may receive a first temperature change request from the first interactive display and transmit the first temperature change request to the second control unit over the Wi-Fi network.

In some embodiments a system for troubleshooting an HVAC system includes, a control unit communicatively coupled to a first plurality of HVAC units and a first interactive display. The control unit may connect to a Wi-Fi network generated by a wireless access point connected to the Internet. The control unit detects and connects to a control server over the Internet using the wireless access point. The control unit may detect a local user device over the Wi-Fi network, wherein the local user device may control the plurality HVAC units by communicating with the control unit over the Wi-Fi network. The system may include a mobile troubleshooting device that communicates with the control unit using a Wi-Fi direct protocol without accessing the Wi-Fi network. The system may include a remote troubleshooting device that communicates with the control unit over a control connection established between the control server and the control unit.

In one embodiment, a system for replicating settings in an HVAC network includes a first control unit including a first internal clock, the first control unit communicatively coupled to a first plurality of HVAC units and a first interactive display. The system may also include a second control unit comprising a second internal clock, the second control unit communicatively coupled to a second plurality of HVAC units and a second interactive display. The system may include a communications network, wherein the first control unit detects the second control unit over the communications network and the first internal clock and the second internal clock have the same time.

In one embodiment, an HVAC system includes a first control unit communicatively coupled to a first plurality of HVAC units and a first interactive display. A second control unit communicatively coupled to a second plurality of HVAC units and a second interactive display. The first control unit is operable to detect and connect to the second control unit using a Wi-Fi direct protocol to create an HVAC control network that is designated as a primary communications network. The first control unit further operable to detect a Wi-Fi network including a wireless access point. The first control unit operable to re-designate the HVAC control network as a secondary communications network and to designate the Wi-Fi network as the primary communications network. The first control unit may also detect and connect to the second control unit over the Wi-Fi network, wherein the first control unit may receive a first temperature change request from the first interactive display and transmit the first temperature change request to the second control unit over the Wi-Fi network.

An IO-Link master includes: an IO-Link communication port that communicates with an IO-Link device according to a predetermined communication protocol; a digital input port that receives a first signal value output from the IO-Link device; and a determiner that determines whether abnormality is generated in a digital input line connecting the digital input port to the IO-Link device based on a second signal value received with the IO-Link communication port and the first signal value.

In one embodiment, a system for managing control units in HVAC network includes a first control unit communicatively coupled to a first plurality of HVAC units and a first interactive display, and the first control unit controls HVAC services for a first zone. A second control unit communicatively coupled to a second plurality of HVAC units and a second interactive display, and the second control unit controls HVAC services for a second zone. The first control unit may detect and connect to the second control unit using a Wi-Fi direct protocol to create an HVAC control network. The first control unit may also determine that the second control unit controls HVAC services for the second zone in response to connecting to the second control unit. The first control unit may also update the first interactive display to show the first and second zones and receive a command from the first interactive display over the HVAC control network to adjust a temperature of the second zone.

A method for verifying the assignment of a drive to a control device of an industrial robot. A drive, comprising at least one actuator and a motion sensor, is assigned to one of the axles of the robot. The assignment is verified by outputting a suitable test signal from the control device to the drive, and comparing the output test signal with motion signals generated by the motion sensor.

A server that includes an interface configured to receive a registration request from a control unit. The server further includes a processor configured to authenticate the control unit based on the registration request. The server is further configured to register a primary user device associated with the control unit and register a secondary user device associated with the control unit. The server is further configured to establish a control link between the control unit and the primary and secondary user devices. The control links facilitate control commands between the control unit and the primary and secondary user devices. The server is further configured to store the installation report in a server database.