RS232串口问题

[yuanjj]

小弟学labview编程,运行这个程序与PLC做RS232串口通信时，PLC只发3个字节的数据，labview得到的数据一直在跳变，请问是labview程序的问题吗？

[carmen9]

https://forums.ni.com/t5/LabVIEW/Visa-RS232-reading-data-stream-of-variable-length/td-p/3786478

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000x1jtCAA&l=en-US

https://forums.ni.com/t5/LabVIEW/Visa-RS232-reading-data-stream-of-uncertain-length/m-p/3734225/high...