How can my FP-2000 read/write to my FP-1600?

[Richard2950]

I want an FP-2000 to be able to read and write to digital I/Os on an FP-1600. I created an iak file that listed both devices and their channels. The vi worked when running from LabView for Windows, but when I tried to run it on the FP2000 it would not create tags for the channels on the FP1600. It did not recognize the existence of an additional comm resource or its devices, even though I was careful to download the iak file before running the vi.

What do I need to do to get the FP-2000 to be able to read/write to the FP-1600?

Rich

[Richard2950]

OK, I answered my own question. I knew that I could read from the FP-1600 via Datasocket reads using the Lookout protocol, but first attempts to write values this way failed. I made some seemingly insignificant changes to my vi, and now I am able to write values as well as read them. It would sure be nice to be able to use the FieldPoint vis to read data only when it changes, but I can live with the datasockets.

Rich

[Mike S. @NI]

Richard,
The DataSocket Read VI has some inputs that allow you to read data on changes, similarly to FP Advise. If you have the "wait for updated value" input set to true and the value has not changed since the last read, the function will wait "ms timeout" milliseconds for a change and then set the "timed out" output to true.

Regards,
Mike Shasteen
Applications Engineering
National Instruments