Dear All

I have same problem with MD720. I am trying to INIT modem (with CPU-314 and CP341-RS232) but it is not work. With hyperterminal i could init and send sms ! but with PLC program i can't INIT yet. I use FB18 that is in library and use a DB for input and output parameter and in online mode set INIT input and for almost 30 sec modem is busy and after that READY status is still FALSE.

What is wrong ?  PLease help me ! :)

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Split from Problem to initialize md720-3.

Hi,

do you know the following FAQ:

Wireless Signaling and Switching via SMS with serial CPs/CMs and the MD720-3 GPRS/GSM Modem

 This Application Example contains libraries and descriptions -hope this helps you...

Regards,

Towome