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How can I check, whether on COM1 one unit connected is?

 

RGH
See cover!

I have here (in the firm) PCs with a seriellen Port on COM1. I should for a Program somehow check whether a serielles unit on these interface angestöpselt is, circa in the program with are missing the Gerätes defined Options auszublenden. has someone a idea? (In XProfan; Delphi goes but too.)

Greeting
Roland
 
XProfan X3
Intel Duo E8400 3,0 GHz / 4 GB RAM / 1000 GB HDD - ATI Radeon HD 4770 512 MB - Windows 7 Home Premium 32Bit - XProfan X4
06/19/17  
 




E.T.
Huch , Roland has 'ne question ... Joke ??

in the serious: on the COM-Port can Yes not plenty read, what a unit concerns. If, How I your question entnehme, the COM-Port famous is and, which unit drann stick should, would I simply whom COM-Port inquire (with for unit known Settings for Baud / Parity etc.) and on a response hoping.
ought to a response arrive, is Schonmal one unit on the COM angestöpselt. then The response evaluate, if The data so looks How expects, isses ok. If unerwarteter "Daten - Müll" or nothing ankommt, is hold nothing angestöpselt or one other unit, what on inquire not reacted or unsinnige data supply.

so would I rantasten ....
 
XProfan X3
Grüße aus Sachsen... Mario
WinXP, Win7 (64 Bit),Win8(.1),Win10, Win 11, Profan 6 - X4, XPSE, und 'nen schwarzes, blinkendes Dingens, wo ich das alles reinschütte...
06/19/17  
 




funkheld
regularly one Ping Send with Seriell if one unit connected is, if the not after a designed Time(ms) present is , is too no unit connected.

greeting
 
06/19/17  
 




H.Brill
usually should still one unit
the DTR signal ((Data terminal Ready)
settle, if it connected becomes.

Perhaps can this somehow inquire.
on can something like Yes with SetComExt().
 
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06/19/17  
 



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