LabVIEWで特定の数値のみを表示させる方法

[kazunari]

LabVIEWで特定の数値を表示器を用いて表示させたいです。文字、数字、文字、数字となっている文から数字のみを抜き取りたいです。今回の場合0025.4のみを表示させたいです。日本人なので拙い英語で申し訳ないです。よろしくお願いいたします。

I want to display a specific number in LabVIEW using a display unit. I want to extract only numbers from a sentence that has letters, numbers, letters, and numbers. In this case I want to display only 0025.4. Sorry for my poor English, I am Japanese. Thank you in advance.

[GerdW]

Hi kazunari,

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@kazunari wrote:

I want to display a specific number in LabVIEW using a display unit. I want to extract only numbers from a sentence that has letters, numbers, letters, and numbers. In this case I want to display only 0025.4. Sorry for my poor English, I am Japanese. Thank you in advance.

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ScanFromString is your friend:

There are more options to parse a string, depending on your other requirements…

[kazunari]

Dear GerdW, Thank you for taking the time to reply.
Sorry for the lack of explanation. I want to control a temperature measuring device and display the measured values. When I create and run the program as you have taught me, I get an "Error code - 1073807339" and it times out. Should I put a delay time in this case? If so, how should I do it?
Thank you in advance.

Kazunari

[GerdW]

Hi kazunari,

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@kazunari wrote:

When I create and run the program as you have taught me, I get an "Error code - 1073807339" and it times out. Should I put a delay time in this case? If so, how should I do it?

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That error is not related to string parsing as requested in your first message…

It is a simple "serial comm timeout" error: your device does not respond within the (default) timeout period!

Placing another delay in the VI will not help here: how should it improve to receive a device response?

Solution:

• Read the manual of your device to learn how to send correct commands and how to receive responses.
• Implement error handling in your VI.
• Watch this excellent video about proper serial communication.