79H (Internal Temperature Alarm)

This message can be sent to the backend server when an internal temperature alarm event is detected. For the internal temperature alarm event detection, please refer to AT@ITMP command.

The frame format of a report that only carries 79H record is as follows:

For example (Total 40 bytes):
2B 00 00 28 00 01 23 45 67 89 01 23 45 C0 31 00 0A 00 00 11 66 8E 47 F7 00 00 79 02 79 06 01 90 5D D5 2E FA 01 23 6C 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	79H	79H
	Event Code		1	00H, 01H, 02H
	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 - Intenal temperature returns to normal.

  • 01H - Internal temperature is low.

  • 02H - Internal temperature is high.

• 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 121 - Internal Temperature.

Configuration

The parameters related to the generation and transmission of 79H record are controlled by the following QRC command:

Example:
AT@QRC=gl601###,79,,,1,2|88,012F$
+ACK:QRC,123456789012345,C031,10,0,79,012F,20210407101530,1234$
AT@QRC?gl601###,79,0C37$
+QRY:QRC,123456789012345,C031,10,0,1,1,79,,,1,2|88,0C37,20210407101530,1234$

Parts	Fields	Length (Byte)	Range/Format	Default
Head	Header	3	AT@	AT@
	Command Word	3	QRC	QRC
	Leading Symbol	1	=	=
	Password	8-16		gl601###
Body	Record ID	2	79	79
	Reserved	0
	Reserved	0
	Action	1	0-2
	Data IDs	N	ID1|ID2|ID3…
Tail	Sequence Number	4	0000-FFFF (‘0’-‘9’, ‘A’-‘F’)
	Tail	1	$	$

• Record ID

  Which record to configure. Always “79” here.

• 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 79H record. The characters ‘|’ are used to connect each data ID.

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