CRIO and Interface Cards Suggestion for SPI/I2C, RS232, RS422 and RS485 Communication

[Michael_Smith]

Hi,

I'm seeking suggestions for CompactRIO (CRIO) system and compatible interface cards to enable efficient communication with various sensors using SPI, I2C, RS232, RS422, and RS485 protocols.

Thanks

[santo_13]

NI provides libraries for I2C and SPI and use the DIO cards - https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019VSSSA2&l=en-US

You can use 9871 for RS422/485 and 9870 for RS232

[Michael_Smith]

Hi Santhosh,

Thank you for your recommendation. What about the CRIO? which one should I use? 

[santo_13]

There are a few options for chassis and controllers, you need to choose one based on your application need. If all that you need is to gather data from SPI/I2C, RS422/485, RS232, you don't need a cRIO at all.

cRIO is used for time-critical applications.