missing data with rs232

[GerdW]

Hi Victor,

implement some error handling.

When your device doesn't answer you (need to) just repeat the command and ask again for new values!

What else can you do when your external 3rd party device doesn't follow it's own manual? (Well you might ask the support for that special device.)

[VictorHuang1]

Hi GerdW, Thanks for your quick reply. I am not familiar how to utilize error handle. Could you please kindly show me a sample how to to ask device again. Could I loop back to previous subVI? Or I should use case structure to ask device again. Thanks in advance. Best regards, Victor

[VictorHuang1]

Hi GerdW, I added error handler. Does this correct? Best regards, Victor

[VictorHuang1]

Does this what you mean? Thanks Best regards, Victor

[GerdW · Accepted solution]

Hi Victor,

you can wire the error cluster directly to the case structure selector input, no need for this ErrorHandler VI.

And I would NOT wire the previous error as input to the next device call: usually those subVIs do nothing when an error occured upstream…

[VictorHuang1]

Hi GerdW, Thanks for your great suggestion. I put error handling. I just ran 100,000 times. I have nice and smooth data. I highly appreciate your wonderful help. I learned a lot. It make my life much easier. wish you the best Best regards, Victor