HI,
I finally managed to communicate the modem to V350, the modem can now send and receive text message using the command below:
AT&F
WAIT 5
AT+CSMP=17,167,0,0
AT+CSCA?
AT+CPIN?
AT
AT&C1&D0X4Q0S0=1v1
AT+CMGF=1
AT+CNMI=1,0,0,0,0
AT&W
it seems that the cause of the error was the "&S0". Although it is now connected, there is still a problem with receiving... The OPLC could not decode the message. I tried to connect the full receive text on a string variable and output the data on the string.
For example, I sent a message "Hi" on the OPLC number, and the OPLC displayed a message same as below:
AT+CNMI=1
rwty@@@@@@ss+sf@@@@@@@dgdf=dsfj
Above is not the actual received message but somehow the pattern displayed in the OPLC.
I hope somebody could help me resolve the problem or just to give any idea where should I look at.
Regards,
Raymond