User Manual

Brillian
AI 2000 CIDRW
7
2.4 Message Block Form
The maximum length block has 1 byte Length Byte，10 byte Header，
and 244 byte Data，and 2 byte Checksum。
name
numerical
mean
seat
Length Byte
10~254
Data lenght
0
Upper Device ID
R
0~127
Device ID
1
Lower Device ID
0~256
TCP ID
2
Upper Message ID
W
0~127
Stream No.
3
Lower Message ID
0~255
Function No.
4
Upper Block No.
E
0~127
Block No.
5
Lower Block No.
1~255
Block No.
6
System Bytes
0~255
System contrast byte
7
1
System Bytes
0~255
System contrast byte
8
2
System Bytes
0~255
System contrast byte
9
3
System Bytes
0~255
System contrast byte
10
4
Data
0~255
data
11~254
Upper Checksum
0~255
SUM check from
255
Lower Checksum
0~255
1byteto 254byte
256
2.4.1 Data record length
One byte，for mean the length of data record ，the value is 0~254
not including the itself and Checksum (2 bytes)，
2.4.2 Data Header
10 bytes for Header including (Device ID), (Message ID)，(Block
No.)，and (System Bytes).
Device ID：First byte is R bit： R=0 Host→Equipment
R=1 Equipment→Host。
Message ID：First byte is W bit： W=0 don’t need reply;
W=1 need reply。
Block No.：First byte is E bit： E=0 still have Block E=1
is the last Block。
System byte：Message number, normally increment by transmitter and
the receiver reply the same number.