Timing test of I2C interface chip

I am new to Labview and meet some problems.I hope I can get your help,and any help is appreciated.I want to generate 2 controllable digital waveforms using PXI-6552 with HSDIO.In this way,I try to stimulates SDA and SCL regarding I2C serial protocol .And my problem :I dont know how to make SDA digital line generated by PXI-6552 delayed or forward in order to check the I2C interface chip's setup time is right or not according to I2C user mannual.
Thank you very much.

NI provides a LabVIEW API for the USB8451. If you use the USB8451, you would use the provided API to write a program that controls the USB8451 and you would do all of the I2C communication in your program. This would mean using functions / SubVI's to connect to the USB8451 and then perform I2C operations through it.
If you use USB already on your device, then you would probably use NI-VISA as the driver and have to get / write your own API to talk to the specific device. The manufacturer may have a LabVIEW (or other) API available for talking to the device that you could get. If not, then you would have to understand the details of how to communicate with the device and then write an API using NI-VISA serial functions. This would mean making NI-VISA be the assigned driver for the device and then using VISA Serial functions / SubVI's to send the messages and receive the responses.

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Hi all!
Hope you are doing great!
Well I have a question which is more about asking all you for an idea!
The Situation:
I have a circuit board which has an On-Off Valve, Digital pressure sensors (manufacturer AMD) and Humidity/Temperature Sensors (make- IST Hygrosens). On the board all the sensors communicate as I2C slave devices and all the data from the sensors is read into an I2C --> USB adapter chip which further connects to the PC via normal USB cable.
Additional to this board, There is a Relay circuit with a simple 1-pole relay which controls an on-off valve on the above Circuit board. This valve is controlled totally separate via a coaxial cable from the relay directly to the Valve. But the relay board has a I2C interface and it also acts as a slave device. The relay board has the same I2C --> USB adapter chip.
Both the Relay board and Sensor board connect via USB to the PC which I suppose is the Master device.
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I now want to translate this automation system onto LabVIEW. I searched the NI website where there is a DAC card called - USB8451 which supports I2C interface... I am a beginner in LabVIEW and cant really make sense out of how should I go about implementing this system on LabVIEW..
If you guys can please help me out to atleast start (like what all hardware I would need etc..), to have a clear picture, it would be great help!!
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NI provides a LabVIEW API for the USB8451. If you use the USB8451, you would use the provided API to write a program that controls the USB8451 and you would do all of the I2C communication in your program. This would mean using functions / SubVI's to connect to the USB8451 and then perform I2C operations through it.
If you use USB already on your device, then you would probably use NI-VISA as the driver and have to get / write your own API to talk to the specific device. The manufacturer may have a LabVIEW (or other) API available for talking to the device that you could get. If not, then you would have to understand the details of how to communicate with the device and then write an API using NI-VISA serial functions. This would mean making NI-VISA be the assigned driver for the device and then using VISA Serial functions / SubVI's to send the messages and receive the responses.

What is procedure for testing a PI interface ,

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there is secnerio from mq seris to idoc , the large amount of data is coming . i want to do testing for this .
weather any test case are there .
other rwb , pay load , any other option is there .

Hi,
divide your scenario into Success and Failure Cases..
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Failure Case :
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2. Check for the Mapping Failure and alert is triggered.
3. Finally idoc failure errors in both PI and ECC..
HTH
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The max clock rate of NI's USB-8451 I2C interface is 250kHz.
Please support my request for an interface with at least 400kHz.
Has anybody used interfaces (with LV driver) from third-party suppliers with a clock rate of 400kHz or higher ?

Hi Christian,
Thank you for your suggestion.
Because I don't use the LV FPGA Module, this is a too expensive solution !
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Problem Description :
I am attempting to deploy an adaptive control system using cRIO. I have an NI
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Hi Che Eky,
Check out below helpful thread & doc:
SERIALIZE_APPLICATION_DATA Conversion error ABAP => XML: Request Message
Serialization issue in abap proxy
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a89312f8-0b01-0010-86b3-fdd7178e0534?QuickLink=index&…
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Krupa

Time-out limit of the 8451-I2C interface for hold-master condition

I am working with Windows XP, Labview 8 and the USB-8451 I2C to USB interface-box.
We intend to incorporate the USB-8451 into our product evaluation kits for a new sensor product.
This evaluation kits should be used by our customers when they start working with our sensor products.
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The hold-master is produced by the sensor after full transmassion of start-bit, address, read-bit and ACK.
After the hold master is suspended three bytes can be read by the master.
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How can I change it to higher values?
Thank you very much for your support!
Message Edited by UnexpectedLifeForm on 02-19-2007 09:48 AM

Dear Member,
That's right. If somebody encounter this problem again.
You should contact your local NI branch that will install the new firmware
version (that works with the last driver version)
Best regards,
Nick_CH

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Dear Chinna,
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 Can u please suggest me to solve this issue
Regards.,
V.Rangarajan

Hi sabrish ,
 Thanks for ur reply. I am trying small Abap proxy to file scenario only. I have referred the Ravi's blog.
In sm59
 1. for LCRSAPRFC technical setting gateway given as
 host xidev and gawtaway as sapgw12 like that
 Connectrion succesful
 2. for SAPSLDAPI also same as
 technical setting gateway given as
 host xidev and gawtaway as sapgw12 like that
 Connectrion succesful
 I have activated the proxy But just trying to click the Test Interface button. it has shown that messsage
 Do i need to make any changes , like connection as R3Dev system's host ?
Regards.,
V.Rangarajan
Message was edited by:
 ranga rajan

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Internal Error
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Hi
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Timing test of I2C interface chip

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