I2C Digital Waveform Library Timing Parameters

Does anyone know how the cluster of "I2C Timing (ns)" is being done in the following code? It is an abridged version of the example VI "HSDIO I2C - Hardware Compare.vi" downloaded from here. It uses the I2C Digital Waveform Reference Libarary.
The time on the X-Axis does not seem to be any help, and the front panel parameters are very cryptic in their naming system. Does anyone know what all those numbers mean and how it correlates to the actual times (dt) between each point?
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I finally found where the parameters are specified. They can be found in the UM10204 I2C-bus specification and user manual.
Under the current revision 5, it is found in Table 10 on page 48:
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Hi JeyZ - In the past, I've worked with microprocessor-based slave devices that have nondeterministic response times to a given query from the master. For example, I would send a data query in the first byte, then expect to clock out the data from the slave in the next byte. If the slave device wasn't done with its search/retrieve routine, it had no data in the output register so all I clocked in was x"00". Could something like this be happening to you? Do you have a datasheet for the slave device you're communicating with that you can link publicly? You may also try using the SDW library to build the waveform. It will guarantee that timing parameters for the bus are met and all edges in the waveform conform to protocol requirements. Alternatively, I can only ask that you post more information about your application software and the device you're communicating with, so we can help you debug it. In response to your question about using the 6229 for I2C, that device does not have a per-cycle tristate feature. At present, only the 655x devices support that capability. Without it, you would have to do a lot of work to get this device communicating over I2C, and I can't guarantee it'll be possible in the end.

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I'm trying to create a module using the I2C Digital Waveform Reference Library: http://zone.ni.com/devzone/cda/epd/p/id/6080
The trouble I'm running into is programming the timing into the Init VI. The timings I define in the input cluster from a particular IC's datasheet don't seem to hold; the coerced timings cluster shows all 0 for each timing value. Has anyone gotten this to work?

Hi Jeanius -
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Message Edited by David S. on 07-20-2009 10:01 AM
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When one looks at the specifications for the USB6501, one notes that it cannot do hardware-timed output. Therefore, you can't use a waveform datatype to generate output with this card.
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Aim of my VI: 1. PLC Digital Outputs are being switched from On and OFF through a relay. I have to read that signal and represent it in the digital waveform within a time period, using NI DAQ 6251.
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Solved!
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SOmething like this should work for a simple digital wave.
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I2C Digital Waveform Library Timing Parameters

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