EverFocus EDSR100H instruction manual Receiver ID Digital Video Recorder

2-1. The format of message packet is as follows:

Length Byte (Prefix: 0x86, 0x87, or 0x88 ..... )

Receiver ID high byte Receiver ID low byte Opcode Byte

Data Byte1

Data Byte2

Data Byte3

.

.

Checksum Byte

2-2. Length Byte

This Length Byte is also a prefix. Bit7 must be 1.

EX: 0x87 ==> this packets has 7 bytes length. ( not included Length byte itself )

2-3. Receiver ID

1). Individual receiver ID
---------------------------------------------------------------------
Decimal	14bit binary value				Hbyte	Lbyte	Receiver ID (Digital Video Recorder)
-------	-------------------		------		------ ----------------------
0	0000000	0000000			00	00	ID = 0
1	0000000	0000001			00	01	ID = 1
2	0000000	0000010			00	02	ID = 2
....
126	0000000	1111110			00	7e	ID = 126
127	0000000	1111111			00	7f	ID = 127
128	0000001	0000000			01	00	ID = 128
129	0000001	0000001			01	01	ID = 129
255	0000001	1111111			01	7f	ID = 255
256	0000010	0000000			02	00	ID = 256
....
511	0000011	1111111			03	7f	ID = 511
....
16382	1111111	1111110			7f	7e	ID = 16382
---------------------------------------------------------------------
2). Broadcast ID
---------------------------------------------------------------------
Decimal	14bit binary value			Hbyte	Lbyte	Receiver ID (Digital Video Recorder)
-------	-------------------		------	------ ----------------------
16383	1111111 1111111			7f	7f	all DVR connect to RS485
---------------------------------------------------------------------

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