NI-4851 and TI TMP275 I2C temperature measurement

[N.Schnitzler]

Hi everybody, 

I want to read the Temperature of a Texas Instruments TMP275 (http://focus.ti.com/lit/ds/symlink/tmp275.pdf) I2C Sensor with a NI-4851.  After some tries i was able to read out the correct temperature: 

at the next step i wanted to increase the resolution by sending a 01100000 to the sensor to activate the 12 Bit operation mode, i used a shrinked version of the write example:

but then i get this error:

what do i do wrong? 

best regards 

[muks · Accepted solution]

See here

[N.Schnitzler]

Thank you, 

i think i skipped the important passage at the datasheet, now it works fine.

best regards 

Message Edited by N.Schnitzler on 05-20-2010 06:26 AM

[muks]

Glad you got it working...

[Salvo_Sax]

Hello,

I do am a beginner and I need to read the TMP275 through the NI8451 with 12bit resolution.

Can you show the VI to configure and read with max resolution?

Thanks

Salvo

[N.Schnitzler]

Hi, 

i will be at my office on wednesday, then i will search and upload the files.

best regards 

[N.Schnitzler]

Hi,

here is the configuration and the read out file, not nice but working.

best regards

N. Schnitzler

[Salvo_Sax]

Thank you very much!

Best regards,

Salvatore Caruso