GT-530 user manual v1.0
6. Send/Receive SMS by COM 3
GT-530 provides sending/receiving SMS function from COM 3. This function can provide
PLC or PAC to send or receive SMS through GT-530. That can extend GT-530 to various
applications.
COM port setting
Baud rate：9600 bps
Data bit：8
Parity check：none
Stop bit：1
Flow control：none
6.1
Send data to COM port of GT-530 by SMS command
It is possible to use SMS to send data to com port of GT-530. The command header
is”+++”. The first setting phone number just has the authority to use this function with the
“Allowed” enabling. The command support 7 Bits format
Command
：
+++Message
Message
：
The message is sent to com3 of GT-530 (Maximum 130 char)
Exmaple
SMS content
：
+++Hello
To com port
：Ｈ
ello
6.2
Sending SMS by COM 3
This function is used to send SMS to the first setting phone number by this
command ”+++”. This command supports ASCII code, not Unicode
Request
：
+++Message,
Message
：
The user-defined SMS content,and the end of the message have to add
ASCII code 0x0d.
Example
：
Command from com3
：
+++Hello
Received SMS content
：Ｈ
ello
GT-530 User Manual, Version 1.0, August 2009
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