siemens tc 35 gsm modem interfacing with labview

[krnashkjdhv]

Hello sir,

I have siemens tc35 modem and i want to read message on labview using this modem, i check the modem using hyperterminal, it works well. i am using basic visa read and write vi but when i type AT in write buffer then it read the same as it supposed to be OK. couls you please help me.I will be very appreciated.

thanks

[moderator1983]

Can you attach the LabVIEW code you wrote to communicate with GSM module??

Have you placed a delay between write (command) and read (response)??

Any error code??

You can try using this code (attached, saved in version 2009)... Let us know your observation..!!

[krnashkjdhv]

Hello i try using same vi that you made but when I type AT command then i a not getting OK from gsm but i am getting same AT rply from it.

[moderator1983]

I referred to this document, and on page 14 it mentioned that, reply to command AT will be AT, though in the picture it shown as OK will be the reply.

You try this new code, and check if its making call to a specified number...

Before running the code, make sure to enter the number...

[krnashkjdhv]

Hello Sir, I tryed to make call but the vi not making any call to any number.

[RavensFan]

You still haven't tried putting in a line feed or carriage return character at the end of the string you are writing.

[krnashkjdhv]

 hello sir,

do we require both line feed and carriage return at end of string?

may i know how to add there parameter please?

thank you.

[joaopam]

Concatenate a CRLF constant to your command.

Like this:

Keep in mind that this is Carriage Return / Line Feed. You can use only CR or only LF. It's up to you.

Regards

[RavensFan]

Read my responses in the other thread.  http://forums.ni.com/t5/LabVIEW/GSM-modem/m-p/2523078#M766532

This is why you shouldn't ask questions in multiple threads.  You get multiple responses to different questions and they all become disjointed and waste people's time answer stuff that has already been answered.

[azadplc007]

Hi with the help of ypur VI, I can make a call.. but I could not read the msg from the GSM module. Could you help me? My gsm module is sim900a