Data manipulation

[zhao.lin]

Hi, everyone,

My name is Zhi and I am working on my senior project. Right now, I want to get the reading from my sensor by using VISA serial reading function. From other posts in NI forum, I know that I have to data manipulation inorder to get proper reading. I am wandering if anyone can help with me because I have never done any data manipulation before in any programing language. Here below are my case:

The output data are from binary and VISA read function assume it to be string. I have manipulated this data in order to get the proper reading. Although the sensor manual tell the exact bit we need to read from the data. However, I really dont know how to do it in labview. I have attached the manual ( page 31).

Thanks you very much.

[Jorge_Amaral]

hello,

let me just make a question, and tomorrow i can do you an example.

You receive 2 bytes and you don't know how to get H-byte with L-byte, then concatenate both?

If this is the problem, reply this, and tomorrow I can do you the example. Tell me what's your labview version

[zhao.lin]

Yeah,  exactly. Thanks very much.  btw, how do I rate a good reply ?

I am using labview 8.2


Message Edited by zhao.lin on 04-23-2008 02:14 PM

[MikeS81]

Hi zhao.lin,

the attached pictures shows some ways how to get you single bits. Hope this helps.

You can rate answers if you have a minimum of 50 posts. 

Mike

Message Edited by MikeS81 on 04-23-2008 09:21 PM

[zhao.lin]

so, in your picture, you are showing me two ways of  converting the number the string to bits, right? ( I havent had a chace to try it now becuae i have class until 5 pm (pacific). I will let you if any progress I make. Thanks.

Unfortunately, I could not rate all your answer yet. Otherwise, all of your responds are extremely helpful. Thanks


PS: Without all the NI forum helps, I will fail my senior design project.

Thank you very much again.


zhi

[zhao.lin]

hi, I have tried the method above, however, I get some huge number come up, which is not correct.  I have attached an screenshot and my VI, can anyone take a look at it ?

I think it is becuase I am not manipulating the data correctly. can anyone please check with my set up and compare with what they are telling me to do in the sensor manual , Page 31. Thanks.


zhi


Message Edited by zhao.lin on 04-23-2008 10:14 PM

Message Edited by zhao.lin on 04-23-2008 10:14 PM

Message Edited by zhao.lin on 04-23-2008 10:15 PM

[smercurio_fc]

Discussion continued here.