I have a program that calculates wet bulb from a few user inputs. It is set up to read from a FP-TC-120 for a dry bulb temperature and a FP-AIO-610 for a 0-10v signal from a humidity transmitter. When using two "FP Read" functions the program would read successfully from both modules and calculate for only one iterations. AFter that the the read for the analog input would give error 32812, the read from the thermocouple does not return any errors but the value is now zero. I then replaced the "FP Read" for the anaolog module to "FP Advise". With this set-up I get two succesful reads before the error message and the 0 thermocouple reading. I'm not sure what else could be the problem.
I have no experience with FieldPoint but I don't think you should be doing a close inside the while loop. Put the close outside so that is executed when the while loop finishes.
Once again the forum saves me. I just hope that one day I will be able to give back all that I've taken. Its always the simplest things, thanks for your help.
Something else to take care of is the error handling. You split the error chain before the loop starts but only maintain the upper branch. The way the code is written, If an error occurs reading the second tag you'll never see it. The result is that the program will stop working and you won't know why.
Attached is a VI I wrote for merging two error streams.
Mike...
PS: Don't use NI's routine that claims to do the same thing. I will throw error data away on you...
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