Serial Port Communication Visual Basic

Hi, I a newbie to Visual basic programming and currently using Visual basic 2008 Express Edition. I have an instrument which connects to PC by RS232 serial interface cable. This instrument has RS232 serial commands. I wish to write a VB program to write a serial port command to the instrument and then save the instrument serial port command reply to a text file.

I have looked through the forums and internet search, but still not able to figure out. I greatly appreciate if someone can advise me sample code to do this? Rgds, Helen78. Since your instrument is polled, you may forget the DataReceived event. What you need to do is to open the port, send a command and call a receive method with timeout to receive the answer. You can do this from the UI thread - the simple way - or from a background thread. If you do it from the UI thread, you will block the thread in the period from you send the command until you have received the reply.

Using ActiveXperts Serial Port Component with VBA (Visual Basic for Applications) ActiveXperts Serial Port Component is a software development kit (SDK) that enables the user to communicate to a device over a serial interface. Jul 19, 2015 - All code that manipulates the serial port should appear within this block. Dim com1 As IO.Ports.SerialPort = Nothing Try com1 = My.

Therefore it is important that you set the ReadTimeout so that you don't risk to block the UI thread forever. If you cannot accept the blocking of the UI thread, you need to use multithreading. You can for example send the command from the UI thread and then start a backgroundworker to receive the reply (see the BackgroundWorker class). Events raised from a backgroundworker are raised on the UI thread so it should be a fairly simple matter to make an eventhandler, which empties the buffer when the backgroundworker is finished.

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I have never used the backgroundworker myself, so you can read the class description as well as I can. Instead of the backgroundworker, you can also make your own thread or get one from the thread pool. Since your instrument is polled, you may forget the DataReceived event.

What you need to do is to open the port, send a command and call a receive method with timeout to receive the answer. You can do this from the UI thread - the simple way - or from a background thread. If you do it from the UI thread, you will block the thread in the period from you send the command until you have received the reply. Therefore it is important that you set the ReadTimeout so that you don't risk to block the UI thread forever. If you cannot accept the blocking of the UI thread, you need to use multithreading. You can for example send the command from the UI thread and then start a backgroundworker to receive the reply (see the BackgroundWorker class).

Events raised from a backgroundworker are raised on the UI thread so it should be a fairly simple matter to make an eventhandler, which empties the buffer when the backgroundworker is finished. I have never used the backgroundworker myself, so you can read the class description as well as I can. Instead of the backgroundworker, you can also make your own thread or get one from the thread pool.

Hi, I a newbie to Visual basic programming and currently using Visual basic 2008 Express Edition. I have an instrument which connects to PC by RS232 serial interface cable. This instrument has RS232 serial commands. I wish to write a VB program to write a serial port command to the instrument and then save the instrument serial port command reply to a text file.

I have looked through the forums and internet search, but still not able to figure out. I greatly appreciate if someone can advise me sample code to do this? Rgds, Helen78. Since your instrument is polled, you may forget the DataReceived event. What you need to do is to open the port, send a command and call a receive method with timeout to receive the answer. You can do this from the UI thread - the simple way - or from a background thread. If you do it from the UI thread, you will block the thread in the period from you send the command until you have received the reply.

Using ActiveXperts Serial Port Component with VBA (Visual Basic for Applications) ActiveXperts Serial Port Component is a software development kit (SDK) that enables the user to communicate to a device over a serial interface. Jul 19, 2015 - All code that manipulates the serial port should appear within this block. Dim com1 As IO.Ports.SerialPort = Nothing Try com1 = My.

Therefore it is important that you set the ReadTimeout so that you don't risk to block the UI thread forever. If you cannot accept the blocking of the UI thread, you need to use multithreading. You can for example send the command from the UI thread and then start a backgroundworker to receive the reply (see the BackgroundWorker class). Events raised from a backgroundworker are raised on the UI thread so it should be a fairly simple matter to make an eventhandler, which empties the buffer when the backgroundworker is finished.

Hayley westenra paradiso rar file. Mix - Hayley Westenra - Paradiso - Behind The Scenes Pt. One YouTube 'Cinema Paradiso - Profumo di Limone' (con testo) di Hayley Westenra/Ennio Morricone - Duration: 6:09. Hayley westenra and morricone paradiso download from DownloadFreeSharedFiles.com, Megaupload Hotfile and Rapidshare files. Morricone produced all of Westenra's vocal performances, as well as creating new arrangements for each track and conducting each session with his own 120-piece orchestra, Sinfonietta di Roma.On 18 July 2011, Morricone commented:' When I first heard Hayley’s voice I was impressed and fascinated.

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I have never used the backgroundworker myself, so you can read the class description as well as I can. Instead of the backgroundworker, you can also make your own thread or get one from the thread pool. Since your instrument is polled, you may forget the DataReceived event.

What you need to do is to open the port, send a command and call a receive method with timeout to receive the answer. You can do this from the UI thread - the simple way - or from a background thread. If you do it from the UI thread, you will block the thread in the period from you send the command until you have received the reply. Therefore it is important that you set the ReadTimeout so that you don't risk to block the UI thread forever. If you cannot accept the blocking of the UI thread, you need to use multithreading. You can for example send the command from the UI thread and then start a backgroundworker to receive the reply (see the BackgroundWorker class).

Events raised from a backgroundworker are raised on the UI thread so it should be a fairly simple matter to make an eventhandler, which empties the buffer when the backgroundworker is finished. I have never used the backgroundworker myself, so you can read the class description as well as I can. Instead of the backgroundworker, you can also make your own thread or get one from the thread pool.