.. _headlabel-refx-record-75:

75H (Crash Sensor Data Packet)
==============================

This message can be sent to the backend server when the crash event is detected. About the crash detection, please see the :ref:`AT@CRASH <headlabel-refx-cmd-crash>` command.

**Note**: When the length of the message is too long, it needs to be sent in multiple frames.

The frame format of a report that only carries **75H** record is as follows:

.. code-block:: none

   For example (Total 343 bytes):
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

.. tabularcolumns:: |p{3.8em}|p{3.2em}|p{5.5em}|p{5.8em}|p{15em}|p{4.8em}|

.. table::
   :width: 100%
   :widths: auto

   +----------+--------------------+------------------+---------------+------------------------------------------------+---------------+
   | Parts    | Fields                                | Length (Byte) | Range/Format                                   | Default       |
   +==========+====================+==================+===============+================================================+===============+
   | Head     |                                       | 18 or 20      |                                                |               |
   +----------+--------------------+------------------+---------------+------------------------------------------------+---------------+
   | Reserved |                                       | 1 or 1+N      |                                                |               |
   +----------+--------------------+------------------+---------------+------------------------------------------------+---------------+
   | Records  | Record Length                         | 1 or 2        | 00H-7FH or 8080H-FFFFH                         |               |
   +          +--------------------+------------------+---------------+------------------------------------------------+---------------+
   |          | Generated Time                        | 4             |                                                |               |
   +          +--------------------+------------------+---------------+------------------------------------------------+---------------+
   |          | Record Count Number                   | 2             | 0000H-FFFFH                                    |               |
   +          +--------------------+------------------+---------------+------------------------------------------------+---------------+
   |          | `Record ID`                           | 1             | **75H**                                        | **75H**       |
   +          +--------------------+------------------+---------------+------------------------------------------------+---------------+
   |          | `Event Code`                          | 1             | 00H                                            | 00H           |
   +          +--------------------+------------------+---------------+------------------------------------------------+---------------+
   |          | `Data of Record`   | Data ID          | 1 or 2        | 00H-7FH or 8080H-FFFFH                         |               |
   +          +                    +------------------+---------------+------------------------------------------------+---------------+
   |          |                    | Data Length      | 1 or 2        | 00H-7FH or 8080H-FFFFH                         |               |
   +          +                    +------------------+---------------+------------------------------------------------+---------------+
   |          |                    | Data Content     | N             |                                                |               |
   +          +                    +------------------+---------------+------------------------------------------------+---------------+
   |          |                    | ...              |               |                                                |               |
   +          +--------------------+------------------+---------------+------------------------------------------------+---------------+
   |          | ...                                   |               |                                                |               |
   +----------+--------------------+------------------+---------------+------------------------------------------------+---------------+
   | Tail     |                                       | 4             |                                                |               |
   +----------+--------------------+------------------+---------------+------------------------------------------------+---------------+

The definitions of parts 'Head', 'Reserved', and 'Tail' are :ref:`here <refx-frames-report-format>`.

- `Event Code`

  The default is **00H**.

- `Data of Record`

  It consists of one or more :ref:`Data ID units <refx-frames-report-records>`.

  By default, this record contains only the data IDs listed below.

  - :ref:`Data 143 <headlabel-refx-data-143>` - Crash Sensor Data.