Reset button

[gltfrs]

Hi guys,

I need to reinitialize or like reset my counter to zero. I am using a counter that counts the revolution, looking at some examples I can send a command and preset a number of revolution I wanted. I want to have a Reset button that can reset it to and then I can send a new command. Any ideas? here is what the block diagram looks like.

thanks all

[Mike_Le]

I'm a little confused... is this a sub-VI or a main application?

It looks like you:

1) Open a serial connection.

2) Optionally send "string to write" over the VISA.

3) Wait, no matter what, some number of ms.

4) Optionally perform a read.

5) Close out and check for errors.

What is your end-goal? Do you want to read repeated values? Do you want to be able to send commands over and over again?

[MoReese]

Your post doesn't make any sense.  What does the bd have to do with your question.  You simply need to reset a counter, is this correct?  Are you sending the command to reset serially?  I would have to assume so.  Choose whatever command you want to send at the press of a button.  Does it really matter?  Please provide more specifics about what you are trying to accomplish.

[gltfrs]

The counter has two things preset and counter. From the program that I have I can send a command set the values of the preset and counter. Instead of writing this command; is there  anyway I can just set this two values? My goal is to have two displays and two buttons for both preset and counter. After each iteration I want to reset the values just by pressing a button instead of writing command after each iteration. I hope this is clear.

Thank you

[MoReese]

You haven't stated exactly what you are doing.  Are you communicating between two PCs?  One sends a command to reset a counter on the other? It sounds like you may need a shared variable if your controls are running from another PC. Can you post your code for the controls so we can get a clearer picture of what it is you are trying to do?

[gltfrs]

I am communicating between counter and PC. Look at the code in the attachment thats how I set the value of preset if I want to read I just write N0ta*

[Mike_Le]

You need to post your VI. Just posting pictures of the code / front panel is not sufficient. The actual ".vi" file you are using needs to be posted.

[Dennis_Knutson]

He's using the Basic Serial Write and Read example. What he needs to do is actually write a new VI with the buttons and VISA Writes with the necessary constants.

[gltfrs]

Is it a good idea to use a state machine for this. Creating two cases instead of using a button??????

[MoReese]

You can use a state machine for read/write or two separate VIs.  Either would be fine, but I would not try to control visa using a boolean.