NA HMI Read a file from USB

[scotty134 1]

Hello,

I have an idea to read a text file (txt,xml,csv, etc.) from USB on NA HMI. I did small research over internet and NA terminal manual, but was not able to find any information how can I read a file using VB script on NA HMI panel. Is it anybody tried vb scripting in way to read a file or data from USB stick connected to HMI panel?

 

Thanks in advance!

[scotty134 1]

I believe I have found the solution. System.IO.StreamReader or System.IO.File.AppendText

[sergeFR 2]

with StreamReader , you read but with AppendText you can create and  add a line in a txt file .

[photovoltaic 120]

Make a text box on your screen and a button to call the ReadTXT subroutine. Add this to your page code:

Dim FileReader As System.IO.StreamReader

Public Sub ReadTXT
    
        FileReader = System.IO.File.OpenText( "\USBDisk\txtdoc.txt")
        TextBox0.text=FileReader.ReadToEnd
        FileReader.close
End Sub