How to write "Pagedown" to the serial port?

[Rajesh_Nair]

Hi all

In my application i am communicating with the board through RS232. For selection and some other purpose we have to use the "PageDown" key. Manually we will do this in Teraterm by selecting the "PageDown" key in keyboard. I am trying to automate the whole test procedure. How can i write the "PageDown" to serial port? From event structure i got 81 as the scancode for "PageDown", i tried with this code and it failed. How can we write the extended ascii code??

please help me..

Thank You

Regards

Rajesh R.

[Coq_Rouge]

It is more easy think about strings as a  byte array with values from 0-255. In Labview you will find several modes to display/use non printable ASCII codes. Go to the help (the F1 key) search for strings and locate the "display types" section.

It is not any ASCII code for the pgdown key. But teraterm must send a ASCII code or a sequence of ASCII codes. Just hook Labview up with Teraterm and see what Teraterm send then you push the Pgdown key. Then mimic this in Labview.

[Henrik_Volkers]

page down = FormFeed?

[Himanshu_Goyal]

Hi Rajesh,

To send Page Down to serial port use 0161 in hex format in string.

Thanks and Regards

Himanshu Goyal

[Coq_Rouge]

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@Himanshu Goyal wrote:

Hi Rajesh,

To send Page Down to serial port use 0161 in hex format in string.

Thanks and Regards

Himanshu Goyal

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I have wasted a lot of time debugging code. Because the string indicator/control or constant was set to wrong view mode. I know Doh!...Never think you have the correct display mode check it to be sure

[PhillipBrooks]

If your device uses an ANSI/VT100 terminal type, you may need to send an escape code to perform certain functions.

http://en.wikipedia.org/wiki/ANSI_escape_code

Your hex string might look something like

335B 3236 54

This would be the escape key, a right bracket, the digits 2 and 6 to scroll down 26 lines and T to indicate scroll n lines (26).

[Rajesh_Nair · Accepted solution]

Hi all

Thanks for the reply. Inorder to findout the corresponding Hexcode for "Pagedown" key, i did the following :

1.Connected the serial port of the PC with LabVIEW to another PC with Teraterm

2. Gave an input to Teraterm by pressing the "Pagedown" key

3. Observed the Hexcode through Serial Read in LabVIEW

The value was found to be 1B5B 367E and now it is working!

Once again Thanks to all of you for your valuable response.......

Regards

Rajesh R. Nair