Error 109 Occurred When Using UDP Multicast Open VI and UDP Open VI

Updated Mar 10, 2024

Reported In

Software

  • LabVIEW

Issue Details

I am trying to establish UDP communication by using UDP Multicast Open VI with UDP Write VI to send UDP signal, and UDP Open VI with UDP Read VI to receive the signal, in LabVIEW as shown as follow:

UDP Multicast & Singlecast.png

When I run the code, I get the following error:

Error 109 occurred at UDP Write in UDP vi

Possible reason(s):
LabVIEW: (Hex 0x6D) Multicast connections cannot send to singlecast addresses.

Solution

As mentioned in the LabVIEW's Error Explain, the cause of Error 109 is due sending UDP signal using Multicast connection to singlecast addresses.

In order to solve the issue, please make sure to use multicast in both UDP sender and receiver or use singlecast in both UDP sender and receiver.

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