.. _headlabel-refx-cmd-pms:

PMS (Power Management Settings)
===============================

The `AT@PMS` command is used to configure the power management of the terminal.

.. code-block:: none

   Example:
   AT@PMS=gv500cna,,1,0,,,,012F$
   +ACK:PMS,123456789012345,8203,3,0,,012F,20210407101530,1234$
   AT@PMS?gv500cna,,0C37$
   +QRY:PMS,123456789012345,8203,3,0,1,1,,1,0,,,,0C37,20210407101530,1234$

.. tabularcolumns:: |p{2.2em}|p{14.2em}|p{5.8em}|p{12em}|p{4.8em}|

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

   +-------+-------------------------------------+---------------+-------------------------------------+--------------------+
   | Parts |              Fields                 | Length (Byte) | Range/Format                        |    Default         |
   +=======+=====================================+===============+=====================================+====================+
   | Head  | Header                              | 3             | AT@                                 | AT@                |
   +       +-------------------------------------+---------------+-------------------------------------+--------------------+
   |       | Command Word                        | 3             | PMS                                 | PMS                |
   +       +-------------------------------------+---------------+-------------------------------------+--------------------+
   |       | Leading Symbol                      | 1             | =                                   | =                  |
   +       +-------------------------------------+---------------+-------------------------------------+--------------------+
   |       | Password                            | 8-16          |                                     | gv500cna           |
   +-------+-------------------------------------+---------------+-------------------------------------+--------------------+
   | Body  | Reserved                            | 0             |                                     |                    |
   +       +-------------------------------------+---------------+-------------------------------------+--------------------+
   |       | `Battery Power Mode`                | 1             | 0, 1                                | 1                  |
   +       +-------------------------------------+---------------+-------------------------------------+--------------------+
   |       | `Battery Charge Mode`               | 1             | 0, 1                                | 0                  |
   +       +-------------------------------------+---------------+-------------------------------------+--------------------+
   |       | Reserved                            | 0             |                                     |                    |
   +       +-------------------------------------+---------------+-------------------------------------+--------------------+
   |       | Reserved                            | 0             |                                     |                    |
   +       +-------------------------------------+---------------+-------------------------------------+--------------------+
   |       | Reserved                            | 0             |                                     |                    |
   +-------+-------------------------------------+---------------+-------------------------------------+--------------------+
   | Tail  | Sequence Number                     | 4             | 0000-FFFF ('0'-'9', 'A'-'F')        |                    |
   +       +-------------------------------------+---------------+-------------------------------------+--------------------+
   |       | Tail                                | 1             | $                                   | $                  |
   +-------+-------------------------------------+---------------+-------------------------------------+--------------------+

- `Battery Power Mode`

  Specify the power mode of the Internal Battery of the terminal.

  - **0** - Disable battery power supply.

  - **1** - Enable battery power supply.

- `Battery Charg Mode`

  Specify the charge mode of the Internal Battery of the terminal.

  - **0** - Charge as needed. When the main power supply is connected, the battery is charged as needed.

  - **1** - Charge only when ignition on. When the main power supply is connected, the battery will be charged only when ignition on is detected. The charge process will begin 3 minutes after the ignition is turned on. The charge process is stopped when the ignition is off.