I want to use an NI or 3rd-party USB-to-Serial Converter, such as the NI USB-232/4, to do serial communication on my Real-Time (RT) Operating System (OS). How do I do this?
To do Real-Time serial communication, it is recommended to use an on-board serial port or use an NI PXI /C Series Serial Interface Module to add serial support to your device.NI USB-to-Serial converters are not supported as serial interfaces for Real-Time Operating Systems because they will be identified as a USB RAW device rather than as a serial port. It is still technically possible to use NI-VISA to control USB RAW devices in Real-Time.It may be possible to install the driver for some 3rd-party USB-to-serial converters, and some NI community users have tested some converters successfully. However, USB-to-Serial converters from vendors other than NI are not supported and are not guaranteed to work in real-time environments.
NI recommends customers to use the NI USB-to-Serial Converters for Windows Targets as they are fully supported by NI-Serial for Windows Targets.For a full list of supported serial interfaces under Real-Time Targets check the NI-Serial for LabVIEW Real-Time Readme.
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