Data 120 (Self-Test Status)ΒΆ

After the terminal performs self-test, the data information will be updated. The terminal will automatically perform a self-test every time it is powered on or restarted. The terminal also performs self-test when the terminal receives the subcommand 99 of AT@RTO command.

Please check Record E0H for more information.

The frame format of the Data 120 unit is as follows:

For example (Total 10 bytes):
78 08 5D B3 8C 80 00 00 00 00

Parts

Fields

Length (Byte)

Range/Format

Default

ID

Data ID

1

78H (120)

78H (120)

Length

Data Length

1

00H or 08H

Content

Time

4

Connectivity

4

00000000H-FFFFFFFFH

  • Time

    Record the moment the data is updated.

    Difference, in seconds, between the current local time and midnight, January 1, 1970.

    For example, 5DD52EFAH (i.e., 1574252282) indicates November 20, 2019, 12:18:02, and 5DB38C80H (i.e., 1572048000) indicates October 26, 2019, 00:00:00.

  • Connectivity

    Used to indicate the connectivity of the corresponding component.

    Different bits correspond to different components. A bit value of 1 means that the connectivity of the corresponding component is abnormal, otherwise it means that the connectivity of the corresponding component is normal.

    The components corresponding to the bits are as follows:

    • Bit1 - Modem.

    • Bit2 - Reading IMEI.

    • Bit3 - SIM/eSIM.

    • Bit4 - GNSS.

    • Bit5 - G-Sensor.

    • Bit7 - Bluetooth.

    • Bit16 - Wi-Fi module.

    • Other bits - Reserved, set to 0 by default.