SIM340DZ Help needed +CMS ERROR: 515

sim340dz

Hello

I am finding the 1st hurdle difficult to jump with the SIM340 GPRS Module. I have the Evaluation board and I am trying a small exercise to send an SMS message but its failing every time.

Looking at Hyperterminal...I do the following

CALL READY

AT+CSCA?
+CSCA: "+44447785016005", 145 // UK Vodafone SIM card with call centre number stored on SIM

AT+CMGF=1
OK
AT+CSCS="GSM"
OK
AT+CMGS="<MY CELL PHONE NUMBER>"
> HELLO THIS IS A TEST [CTRL-Z]
+CMS ERROR: 515

I get this Error 515 every time, which is PS Busy, which is the SIM card isnt ready, but it is, cause I got CALL READY and I checked with AT+CSCA? before starting the SMS message.

Any help appreciated to solve my stumbling block?

Rob

Added after 1 hours 11 minutes:

I have solved the issue.

The SIM card was set up for GPRS data only, and no SMS capability, which resulted in the error message.

help with +cms error: 515

Hello,

How you solved the problem ? with commands ?

thaks...

Hi Rob, we're facing the same problem during the design phase and are unable to resolve. We have made sure and the gprs mode is disabled. Can you please guide in the steps followed by you.

Best regards
Jamshid

shifted to sim300CZ it does not have such issues, the only issue was a sudden restart problem...
which was resolved by increasing the voltage.

For Sim300CZ Restart Problem: Please make sure you're providing above 4.3V and enough current to sustain the voltage while communicating...

Best Regards
Jamshid