This happens because the dependant libraries for OPC UA functions are not on the target. To resolve, check the following:
- NI OPC UA support has been installed on your Target. The simplest way is to check the Software drop down under the Realtime target in NI Measurement and Automation Explorer (NI MAX).
- You are using a LabVIEW 2017 or later.
NI OPC UA support for Linux Realtime can be installed by:
- Using the OPKG package installer over SSH.
- Via Software>>Add/Remove Software in NI MAX under your LinuxRT target.
Please note that the Q2 2020 Linux Base Image does not have the ni-opc-ua option defined in the feeds. To resolve this, please update to a newer Linux image.