Error 65575: overrun error while reading data from NI 9871

[Wasif717]

Hello everyone,

I am new here. I configured NI 9871 in RS-485 mode to acquire data from a sensor at the data rate of 8 samples per second. While reading data from sensor, sometimes I got the error 65575: "An overrun error has occurred in the data being read. Ensure that the module Flow Control is configured correctly." I didn't understand the error, how can I fix it, what dose the flow control means.

I will be very thankful if anybody help me to fix this error.

Thanks
Wasif

[luissg]

Hello Wasif,

The error you are getting presents itself when the hardware buffer is full and new data is coming in. Data buffer is 64 bytes. One thing to try is to clear the RX FIFO after every read. Please refer to the following link that talks about the method.

http://zone.ni.com/reference/en-XX/help/370984R-01/lvaddon11/crio-9871/

Hope this help you solve the issue.

Regards