.. _headlabel-refx-data-142:

Data 142 (Crash Information)
============================

Identifies the information of crash event.

The frame format of the Data **142** unit is as follows:

.. code-block:: none

   For example (Total 6 bytes):
   80 8E 03 00 06 40

.. tabularcolumns:: |p{3.2em}|p{10.2em}|p{5.8em}|p{13em}|p{5.8em}|

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

   +---------+--------------------------------------------+---------------+---------------------------------------------+--------------+
   | Parts   | Fields                                     | Length (Byte) | Range/Format                                | Default      |
   +=========+============================================+===============+=============================================+==============+
   | ID      | Data ID                                    | 2             | 808EH (142)                                 | 808EH (142)  |
   +---------+--------------------------------------------+---------------+---------------------------------------------+--------------+
   | Length  | Data Length                                | 1             | 00H or 03H                                  |              |
   +---------+--------------------------------------------+---------------+---------------------------------------------+--------------+
   | Content | `Crash ID`                                 | 1             | 00H-FFH                                     |              |
   +         +--------------------------------------------+---------------+---------------------------------------------+--------------+
   |         | `Peak Acceleration`                        | 2             | 0000H-FFFFH (mg)                            |              |
   +---------+--------------------------------------------+---------------+---------------------------------------------+--------------+

- `Crash ID`

  When the terminal detects a crash event, it will automatically assign a crash ID.

  The ID is convenient to distinguish multiple adjacent crash events. It rolls from 00H to FFH.

- `Peak Acceleration`

  The maximum acceleration value when the crash incident occurred.

  Expressed as a 16-bit signed integer and the unit is mg.