Controlling RTS- & DTR-Line. How to make it?

[MarekTheStudent]

Hello,

I need to take control of the RTS-line using LabWindows/CVI but I don't know how to do this. Can someone help? Little example would be very fine.

Thanks and Greetings

Marek S.

[dilution]

Hi,
Type handshaking in the CVI help. It explains how to configure SetCTSMode.
Regards,

[MarekTheStudent]

Hello,

weeks ago I posted this question but unfortunetally the answer I get is not the answer I wished to have. I tried out this solution but without being succesful. Maybe I try again to show my problem:

I made a program that communicates over RS232. The Communication works fine but my Chief wants  me to control DTR- and RTS-line. Setting a high on DTR and a low on RTS because we want to use these lines as a voltage source but I don't know how to do this.

I tried out SetCTSMode but without any reaction. The voltage of the lines is -12V. After opening the ports the voltage is +12V. Changing CTSMode do nothing change. I also tried out with help of Visa but also without succes.

Have anyone an idea?

Regards,

Marek S.

[dilution]

Sorry, I didn't get you rigtht.
To "manually" control the DTR line:
- ComSetEscape (COMPort, SETDTR) to set the DTR (either +12 or -12 V).
- ComSetEscape (COMPort,CLRDTR ) to clear the DTR
And for the RTS line :
- ComSetEscape (COMPort, SETRTS) and  ComSetEscape (COMPort, CLRRTS).
Is that what you want, what you really really want?
Regards,

[MarekTheStudent]

Hello dilution,

wow, this was fast!!!

First: Great thanx for your help. I tried out and now it works. That's what I wanted.

Second: Sorry for my own stupidity. Having this function all the time in front of my eyes... Shame on me.

As I said: Great THANX for this fast help.

Regards,

Marek S.

PS: This was very fast. I am still very surprised. 🙂