Facing issue in labview

[monika31]

Hello Sir,

I want to use I2C Write/Read and SMBVS for different voltage supply ,I referred the NI manual for the application mentioned but repeatedly I am getting error 301740 The I2c master failed to seize the bus. Sir guide me to resolve the issue.

[altenbach]

This is not really a LabVIEW question, but a hardware question.

(I moved it here for now because it definitely does not belong into the feedback forum, but it could probably be moved again once we know a little more about the problem.)

[monika31]

Thank you for the  response I will ask in hardware section.

[monika31]

Hello Sir,

I want to use I2C write and I2C Read for different voltage supply (low and high) in NI LABVIEW 2017 SP1.I am using NI USB 8451. I referred the NI manual for read and write simulation file and had taken the example files General I2C Read/Write but facing the error 301740 The I2C master failed to seize the bus. Please guide me to proceed. 

The error message screenshot is being attached here.

[jwscs]

just a quick note:

please don't attach 12MB .rtf (i didn't open it, so maybe it is an image .... normally it is an extension for rich text document)

attach a small image (either .jpg or .png) if you want people to look at your problem.

if you have code, attach the .vi

regards

[monika31]

Error -301740 occurred at NI-845x I2C Write.vi:4470001

[jwscs]

did you actually search for your problem?

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000kFlTSAU

[crossrulz]

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@monika31 wrote:

Error -301740 occurred at NI-845x I2C Write.vi:4470001

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Seen that error plenty of times.  Always due to something on the bus holding the line low.  If a chip you can communicate with is not properly powered, that can also drag a bus line down.

[monika31]

Hello Sir,

Yes sir I searched for the problem, I checked all the parameters like wire length and  pull up resister which is already there but cant understand where I am going wrong.

[monika31]

Hello Sir,

I checked the power supply the Led is blinking green which means status is on I understood, but what else I need to checked please tell me.