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Provides support for NI data acquisition and signal conditioning devices.
Provides support for Ethernet, GPIB, serial, USB, and other types of instruments.
Provides support for NI GPIB controllers and NI embedded controllers with GPIB ports.
修改时间 03-13-2019 08:26 AM
各位前辈好,近期我在写LabVIEW串口接收程序时遇到了一个奇怪的问题。串口通讯使用RS485和我自定义的通讯协议,下位机每隔1s给上位机发送数据。上位机接收数据时发现时有数据错位现象发生,像下图划红线的两行一样。大部分数据都是正常的,但是划线两行数据明显错位了,不知道是什么原因造成的。
修改时间 03-15-2019 04:17 AM
Hi,
Could it be the parity?
https://forums.ni.com/t5/LabVIEW/RS485-Communication-Parity-Error/td-p/3363019/
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019MV3SAM&l=en-US
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