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UDP Write

LabVIEW 8.5 Help
August 2007

NI Part Number:
371361D-01

»View Product Info

Writes to a remote UDP socket.

Examples

port or service name can accept a numeric or string input. port or service name identifies what port to write to. If you specify a service name, LabVIEW queries the NI Service Locator for the port number that the server registered.
address is the address of the computer where you want to send a datagram.
connection ID is a network connection refnum that uniquely identifies the UDP socket.
data in contains the data to write to another UDP socket. In an Ethernet environment, restrict data to 8192 bytes. In a LocalTalk environment, restrict data to 1458 bytes to maintain gateway performance.
timeout ms specifies the time in milliseconds to wait before the function completes and returns an error. The default value is 25,000 ms or 25 seconds. A value of -1 indicates to wait indefinitely.
error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
connection ID out returns the same value as connection ID.
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

Examples

Refer to the following VIs for examples of using the UDP Write function:

  • UDP Multicast Sender VI: labview\examples\comm\UDP.llb
  • UDP Sender VI: labview\examples\comm\UDP.llb
  • UDP Multicast Send Recv VI: labview\examples\comm\UDP.llb
  • Named Service UDP Server VI: labview\examples\comm\UDP.llb
  • Named Service UDP Client VI: labview\examples\comm\UDP.llb

Resources


 

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