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LabVIEW
Labview
The term "some error" is way too vague. Is there an error code? What have you tried to debug? How familiar are you with LabVIEW? How about serial ports? Do you have the instrument documentation? Did you study the examples?
Seems trivial. What does the program need to do? Just display pressure on the front panel? Log to disk?
There is a seperate forum where you can offer a job offer. Usually that are more actual jobs that an employer seeks to fill in, but it's definitely possible to also post offers for a specific project or software program. The difficulty with this is usually communication. Many users on this forum are professional LabVIEW developers that work with LabVIEW either for their employer or have a company where they do project work for customers.
A simple pressure reading app is however very trivial and the overhead of (email/phone) communication, remote work, negotiation and project management in such a work model is many times higher than the actual development work for such an app. This means that professional offers will likely be way higher than you would ever consider to want to pay for.
The other extreme are people coming here and more or less expecting us to do their (home) work. This is very much frowned upon and will certainly prompt some very grumpy responses. 😁
If you have any inclination to learn something about LabVIEW programming and are willing to spend your own time on it and do some real work, then this forum is generally fairly friendly. Show what you have done, and where you run into problems. Try to understand the advice you are getting and if it is still unclear, ask again with specific question.
My program has some errors, is as unspecific as it can get. Posting a few pics of your diagram and hoping us to decipher on the screen what you have tried to do isn't to helpful either.
If you don't feel thrilled by the idea of spending a lot of time yourself with LabVIEW you can try to post in the Job Openings forum. I for one won't be able to respond to that as I am employed and not willing or allowed to compete with my employer for work. On the other hand our company has a size and organization that doesn't lend itself to do small project work of just a few days, respectively wouldn't be able to compete in price on that.
I'm also not usually writing programs for free for other people unless sometimes when it is a topic that I'm very much interested in. 😁
The task is trivial, but I am so new to labview and I have a short time to complete. 
This is a simple task but I'm struggling .
Unfortunately, you attached images instead of code (i.e. a vi). We cannot really debug pictures.
- Why do you use bytes at port if you don't even use its output? Does the message have a termination character?
- If the contents of the "write buffer" should be changeable, the terminal belongs inside the loop, else if will get read only once. If its value never changes, it should be a diagram constant, not a control.
- What kind of errors are you getting?
- Do you have a link to the manual?
Thanks for the reply.
I have to measure pressure from The TIC Instrument Controller ( https://avtservices.com.au/shop/tic-instrument-controller-3-head-d39700000/)
When I run the program, visa serial keeps on blinking. In the previous attempt, I got next kind of error( I can't recall that error type) . Can you please help; I'm willing to learn more even though I have a short time to complete this task.
