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MODBUS TCP PROJECT VB NET

After searching for days I found this project that communicate with an I/O module via Modbus TCP. The program works fine reading the inputs and displaying them on the the text boxes. The only problem is I have to click the button all the time to re-read the inputs I am wondering if anyody has ever use this project and can advice a way to keep reading the inputs constantly so the text boxes get update every time a change has been made, on the inputs.
http://www.codeproject.com/Tips/16260/Modbus-TCP-class?msg=5043651#xx5043651xx

David Johnson, CD

use a timer to refresh instead of the button_onclick is one way

Thommy

I also suggest using a timer to permanently re-read the Inputs.

In VB.NET you can create a timer as follows:

Dim MyTimer as New Timer

MyTimer.Interval = 5000   'every 5 seconds
MyTimer.Enabled = True
AddHandler MyTimer.Tick, AddressOf MyTimerTick

Private Sub MyTimerTick (Byval sender as Object, Byval e as EventArgs)
   ' call your button_click to re-read the inputs
End Sub

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tonzur40

ASKER

A timer was my first thought too but it is impractical when I want to trigger the request modbus event as soon as i have received the data from the IO module.

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tonzur40

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tonzur40

ASKER

A timer was my first thought too but it is impractical when I want to trigger the request modbus event as soon as i have received the data from the IO module.