Xeos XMR Series, Руководство пользователя

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XMR User Manual 1.1 17
Mobile Originated SBD (From Device)
To send a payload of data from the peripheral device via the XMR to the Iridium network, the
peripheral device must send the payload in the following formats displayed:
$sendSBD
payload line 1
payload line 2
payload line 3
$finished
Note: Since the Diagnostic/Data Relay port is inactive while not in use, it is important to send a
carriage return, line feed or both before sending the commands and payload.
All lines are terminated with either a carriage return, line feed, or both.
For example, using a carriage return as the line terminator for the same content as the previous
example (represented with “\R”):
\R $sendSBD\R payload line 1 \R payload line 2 \R payload line 3 \R $finished\R
\R $sendSBD\R The payload of the message can be single-lined as well \R $finished\R
The $sendSBD and $finished commands must be immediately preceded/followed by a line
terminator character where displayed above. The payload can be data of any type and is not
limited to ASCII characters.
Any data that exceeds the 330 byte SBD message limit will be split into several chunks and sent
according to the Iridium device’s SBD interval. Each Iridium transmission can send up to 8 SBD
messages of 330 bytes each.
At default settings, the maximum sized message that can be queued for transmission is 4
kilobytes; this limit can be increased to 24 kilobytes, but this can cause loss of data and other
issues if transmission conditions are not ideal. Contact Xeos Technologies if your requirements
exceed default settings.