CMGF command

This subVI sets the GSM modem for sending SMS messages in text mode. Figure 1 shows the block diagram of the subVI.

Fig. 1 Setting the text mode for sending SMS  messages

Message format is: AT + CMGF = 1 <CR>. In text mode SMS message can contain up to 140 characters. In PDU mode SMS message can have up to 160 characters.