Multiple Command Format
In SMS mode it is often convenient to send several commands together in one SMS or packet. It
is possible to append multiple commands together as described below.
Example 1
$DIST,50<CRLF>
$GPSQ,100<CRLF>
Example 2 (recommended format for TCP/UDP mode)
$DIST,500$APPW,orangeinternet$FRED,1
Multiple Command Response Format
Multiple commands received at the same time via any mode will result in one response for each
command parsed. The responses will be in exactly the same format as those described in the
section Single Command - Response.
For Example 2 above the response would be:
$DIST,OK<CR>
$APPW,OK<CR>
$FRED,UN<CR><LF>
The first two commands are recognised and successfully executed, whereas the last command is
unrecognised.
Over the Air Configuration by SMS/GPRS
The commands and formats described above can all be used over SMS, UDP or TCP sockets. The
response will always be returned by the same mode as the command is received, so commands
submitted by SMS will be responded to by SMS to the sender’s phone number. Note that the
sender’s telephone number must be disclosed for the response to succeed.
When sending commands over TCP/UDP sockets, please do not include carriage return (CR) or
line-feed (LF) characters between commands, these are not necessary and can cause parsing
problems.
Prevention of Unauthorised Device Reconfiguration
There is a PIN code feature, which can be used to prevent unauthorised reconfiguration of
devices by SMS. Please refer to the PASS command in the Configuration section of this
document
.
