LINX SPI ADS1256

[Tommka]

Hi.!

I have an ADS1256 24bit ADC. I want to measure voltage with great accuracy. I would like to read ADC data from Arduino Uno via Labview 2015. The ADS1256 uses an SPI bus. I read the SPI bus and an analog input as a control (and an external multimeter). My problem is that I only see the data with the resolution that the analog input can (10 bits).

Where are the other bits?

[diazomar2004]

i have a same problem with another  SPI chip

but try with this VI

i solved the problem sending a word of 24 bit and set the frane size in 3