Data 178 (Scanned Base Beacon Data)

The Beacons information collected by terminal. Each Beacon occupies 8 bytes, including Type, MAC, RSSI.

The frame format of the Data 178 unit is as follows:

For example (Total 12 bytes):
80 B2 09 01 0C 12 34 56 78 90 AB BB

Parts	Fields		Length (Byte)	Range/Format	Default
ID	Data ID		2	80B2H (178)	80B2H (178)
Length	Data Length		1 or 2	00H-7FH or 8080H-80FFH
Content	Number		1	00H-FFH
	The first Beacon	Type	1
		MAC	6
		RSSI	1	80H-FFH (dBm)
	…

• Number

  Indicates how many Beacons the following data comes from.

  If the value of this field is 00H, no other fields are included.

• Type

  Indicates the type of the Beacon. It is refer to the parameter ‘Type’ in AT@BTBCN command.

  For example, 0DH (i.e, 13) means the type is WID310.

  For example, 50H (i.e, 80) means the type is Eddystone-UID.

  For example, 51H (i.e, 81) means the type is iBeacon.

• MAC

  The MAC address of a Beacon.

  For example, 1234567890ABH means the MAC address 12:34:56:78:90:AB.

• RSSI

  The received signal strength.

  Expressed as an 8-bit signed integer and the unit is dBm. When the RSSI value is less than -128 (80H), it is also filled in as 80H, and when the RSSI value is greater than -1 (FFH), it is also filled in as FFH. In particular, 63H means the signal strength is not known or not detectable.

  Typical values are as follows:

  Value	Signal Strength (dBm)	Level
  A7H to 80H	-89 or less	0
  A8H to ADH	-88 to -83	1
  AEH to B4H	-82 to -76	2
  B5H to BEH	-75 to -66	3
  BFH to FFH	-65 or greater	4
  63H	Not known or not detectable	/