"Networking" tag

Synchronize the system clock time based on querying the Internet Time Service (ITS) maintained NIST (National Institute of Standards and Technology): Open a TCP/IP connection to the "Daytime Protocol" port 13, read the 51-character string, parse the string for time and date information, validate the result (look for a server health indicator and a "magic string"), and then adjust the system time.

Monitor process variables and sensor measurements, timestamp them, and log them to a file, and then remote access the datalog file through the network with WebDAV, web browser, or VI running on a PC host.

Transfer data, commands, and status between the RT target and a host system.

Set up wired and wireless networks and connect to the Internet.

Connect an Academic RIO Device to a home wireless router to gain access to the Internet. Note: The NI ELVIS III does not have the Web Interface for modifying these settings. Use NI Measurement and Automation Explorer (NI MAX) to modify these settings instead.

Set up one Academic RIO Device to serve as the ad-hoc network host, and then set up additional Devices to join the ad-hoc network. Note: The NI ELVIS III does not have the Web Interface for modifying these settings. Use NI Measurement and Automation Explorer (NI MAX) to modify these settings instead.

Connect the Academic RIO Device to a PC with a wired network (Ethernet) and establish the Device's Internet connection by sharing the PC wireless connection to a home wireless router. Note: The NI ELVIS III does not have the Web Interface for modifying these settings. Use NI Measurement and Automation Explorer (NI MAX) to modify these settings instead.

Display available IP addresses on the PC host and RT target; learn my public Internet IP address by calling a Web service.

Display all of the network IP (Internet Protocol) addresses at which the RT target or PC host can be reached.

Send email (including attached files) and text messages from the Academic RIO Device.

Use the Simple Mail Transport Protocol (SMTP) to send an email message; send the email to an SMS (Short Message Service) gateway service to forward the email as a text message.

Use the low-level Simple Mail Transport Protocol (SMTP) VIs create an email, attach a file, and set the email header to flag the message as 'high priority' in the recipient's email application. The illustrative application example captures webcam images at regular intervals and sends them as email attachments.

TCP is a reliable connection-based IP networking protocol used between LabVIEW applications as well as other IoT devices.

Determine whether or not Internet access is available by attempting an HTTP connection to the "Microsoft Network Connectivity Status Indicator" (NCSI) web service.

Determine whether or not Internet access is available by attempting a TCP connection to the "Microsoft Network Connectivity Status Indicator" (NCSI) web service.

Send TCP/IP messages to a destination IP address and port number, listen for incoming TCP/IP messages on a user-defined port, and echo received messages back to the source. Combine the sender and receiver into a single "TCP ping" application to test the communication channel between two network hosts, and illustrate the notifier method to stop parallel loops with one "stop" button.

Create a server on the Academic RIO Device that listens for TCP/IP network connection requests from a client running on the PC host, accepts client information including the desired state of the four onboard LEDs, sets the LEDs accordingly, and returns the state of the onboard 3-axis accelerometer and pushbutton.

UDP is a simple and efficient connectionless IP networking protocol used between LabVIEW applications as well as other IoT devices.

Send UDP messages to a destination IP address and port number, listen for incoming UDP messages on a user-defined port, and echo received messages back to the source. Combine the sender and receiver into a single "UDP ping" application to test the communication channel between two network hosts, and illustrate the notifier method to stop parallel loops with one "stop" button.

Create a server on the Academic RIO Device that listens for UDP datagram messages from a client running on the PC host, accepts client information including the desired state of the four onboard LEDs, sets the LEDs accordingly, and returns the state of the onboard 3-axis accelerometer and pushbutton.

Use the infrastructure of the Web for machine-to-machine exchange of information.

A "Web service" uses the infrastructure of the Web for machine-to-machine exchange of specific information. The Academic RIO Device can call Web services to retrieve information and can also host Web services to provide information to other systems.

Learn the technical principles necessary to create VIs that can call Web services which return information in the form of JSON strings.

Form a query string as a URL, retrieve the JSON string served by the Web service, and parse the JSON string to extract useful information.

Learn the technical principles necessary to host a Web service on the Academic RIO Device. Remote clients such as another LabVIEW-based target, an IoT device, or a conventional browser can retrieve sensor measurements and control indicators and actuators using commands obtained from the remote client's request query string.

Host a web service on the Academic RIO Device to serve the states of onboard sensors (pushbutton and accelerometer) and system information (date, time, host name, and IP address), and to control the onboard LEDs based on a user-selected LED hex code.