14H (Overspeed Alarm)

This message is used to report overspeed alarm information.

About the overspeed alarm function, please see the AT@OSPD command.

The frame format of a report that only carries 14H record is as follows:

For example (Total 66 bytes):
2B 00 00 42 00 01 23 45 67 89 01 23 45 00 00 00 1B 00 00 2B 64 F9 AA F6 00 00 14 00 13 04 5F 17 9D A0 0C 02 01 7D 52 16 09 F9 20 A8 E1 FF 2D C0 96 5F 17 9D A0 01 7D 0A 00 25 00 01 B3 0C 01 23 38 24

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	14H	14H
	Event Code		1	00H, 01H, 02H, 03H,04H
	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 here.

• Event Code

  • 00H - The terminal completely exits overspeed alarm state.

  • 01H - Overspeed Alarm 1.

  • 02H - Overspeed Alarm 2.

  • 03H - Overspeed Alarm 3.

  • 04H - Overspeed Alarm 4.

• Data of Record

  It consists of one or more Data ID units.

  By default, this record contains only the data IDs listed below, which can be changed by the AT@QRC command described below.

  • Data 19 - Triggered Time. The time when the event is detected.

  • Data 12 - Current Speed.

  • Data 82 - Full Location.

Configuration

The parameters related to the generation and transmission of 14H record are controlled by the following QRC command:

Example:
AT@QRC=gv500cna,14,,1,1,2|88,0,012F$
+ACK:QRC,123456789012345,8203,3,0,14,012F,20210407101530,1234$
AT@QRC?gv500cna,14,0C37$
+QRY:QRC,123456789012345,8203,3,0,1,1,14,,1,1,2|88,0,0C37,20210407101530,1234$

Parts	Fields	Length (Byte)	Range/Format	Default
Head	Header	3	AT@	AT@
	Command Word	3	QRC	QRC
	Leading Symbol	1	=	=
	Password	8-16		gv500cna
Body	Record ID	2	14	14
	Reserved	0
	Mode	<=2	0, 1	1
	Action	1	0-2
	Data IDs	N	ID1|ID2|ID3…
	Time Interval	<=4	0 or 30-3600 (seconds)	0
Tail	Sequence Number	4	0000-FFFF (‘0’-‘9’, ‘A’-‘F’)
	Tail	1	$	$

• Record ID

  Which record to configure. Always “14” here.

• Mode

  • 0 - Disable. The terminal no longer generates and sends the 14H record.

  • 1 - Enable Report. The terminal generates and sends the 14H record. If the location information needs to be included, the terminal directly uses the currently existing location information (even if the location information has expired).

  If enabled (‘Mode’ is not 0), this record will be generated when the terminal detects an enter/exit alarm state event or an alarm level switch event.

• Action

  • Empty - No change the data IDs in the terminal. If this field is empty, the ‘Data IDs’ field will be ignored.

  • 0 - Append the data IDs carried in the ‘Data IDs’ field to the terminal.

  • 1 - Replace the data IDs in the terminal with the data IDs carried by the ‘Data IDs’ field.

  • 2 - Clear the data IDs carried in the ‘Data IDs’ field from the terminal.

  Note: In particular, it always will be 1 when reading this field.

• Data IDs

  The data IDs contained in the 14H record. The characters ‘|’ are used to connect each data ID.

  For example, “2|88” means Data 2 (Device Name) and Data 88 (SIM Card).

• Time Interval

  The terminal will periodically generate a Record 14H according to this interval when in overspeed alarm state (no matter what the alarm level is). If set to 0, it means that 14H records do not need to be generated periodically when in the overspeed alarm state.