Forcer l'etat du port com

[backsatge68]

Bonjour,

J'utilise dans mon application un port com ( mode classique 9600b...)
Par contre durant l'exécution de mon application il faut que je puisse forcer la ligne TX à "1" (ou "0" ) pendant un certain temps.
lorsque je ne transmets pas d'information.
Comment est ce que je peux procéder ?
Merci

[Henrik_Volkers]

I answer in english because my french

Better: just a picture     

Use the modem line settings (drop a 'number of Bytes at port' and select the break property from modem line settings)

[backsatge68]

Ok merci

I will anwser in Engish, but it will be a litle difficult...

Your solution works  ( it's ok ) Thank you

Now i put a oscilloscope on the COM output,

The time is not exacly the same that i set in the prorgam

If i set 10 ms waiting, the real time mesured is 8ms

It's not a very big problem, but do you think it's comming from my computer

How can i be shure the time that i set in the labview program is the exacly time ?

if my engish is too bad, i can write this post in French....sorry

Thank you for your solution

[backsatge68]

Ok forget my question

The probleme was my oscilloscope

the time base is not good, i test my application with a oder one

Thank you and sorry