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Digital Multiplexer
B. Connecting to RS485
Connecting RS485 and DATA PROTOCOL
1. Communication Method
Data Transmission Type : RS485
Protocol : 8 bit data, 1 Stop bit, None Parity
Transmission Speed: 4800, 9600, 19200, 38400 bps
2.Data Format
Start Code A0H(1)
Data Byte
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
Byte 9
RS485
DATA +
DATA -
9Byte Fixed
Sender Addr(1)
Target Addr(1)
Type
Start Code
Sender Addr
Transmitting address
Target Addr
Receiving address
Triplex Control Command
Command
Check Sum
Lower value of (Oxffff – (Summing from Byte2 to Byte8))
Command(5)
Description
A0H
Address of data transmitting side
KEY DATA
0xff
0xff
0xff
3-5
byte
Check sum(1)
Remarks
Beginning of Data Packet
Triplexer RS-485 addr. (0~255)
0x00~0x28
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