Controlling LVDT using LabView

[Nawaz]

I would like to control a LVDT using LabView. The LVDT has a  RS232 port for communication. I'm new to using LabView software.

I used the Basic Serial Write and Read.vi from the examples in LabView and got a I/O error. Please see attached picture. Could someone advise how I should proceed?

[K C]

Hi,

No picture attached

Have a look at this http://forums.ni.com/ni/board/message?board.id=140&message.id=17644&jump=true

Maybe this will get you started.

[Nawaz]

Sorry. I'm unable to upload files for some reason.

But, here is what the error is: Error - 1073807298 occoured at VISA Read in Basic Serial Write and Read.vi

Possible Reason(s)

VISA: (HEX 0xBFFF003E) Could not perform operation because of I/O error.

[K C]

Can you post your VI ?

You should be able to read the posted VI's if you are using LV7.0 or up

Message Edited by K C on 06-09-2006 03:55 PM

[Nawaz]

Lets see if this works. I'm uploading the document without previewing it.

[K C]

The picture is nice but I like to know how you wired it.

Can you post your VI ?

[Brian_Beal]

In picture you posted, what string are you trying to send to the instrument?  Is it hex?  Should the "0X" be part of that string?

[Henrik_Volkers]

What type/brand of LVDT?

Can you run it with a terminal program?

[Nawaz]

I'm including the wiring diagram. I used the Basic Serial Write and Read example from LV.

[Nawaz]

The start code for the instrument is S<LF> = 0x530A, which is what I'm trying to send to the instrument. The instrument is suppose to transmit back 250 reading/sec when the start code is received. I dont know if I'm using the correct string Syntax to send the start signal.