Transmission Packet Format - Samsung SPD-3700 User Manual

1.3.Transmission Packet Format

<Command Packet Format>
Byte1 Byte2
STX Cam ID Host ID
-STX(Start of Text): A0h
-ETX(End of Text): AFh
-Cam ID: Dome ID(01h~FFh)
-Host ID: Host Controller ID(default:00h)
-Checksum: The value of Modulo 256 equal to a total of Byte2 to Byte9
processed by 'Logical Not(~)'
Checksum = ~((Byte 2 +......+ Byte 9) & FFh)
<Return Packet Format>
Byte1 Byte2
STX Host ID Cam ID
-Host ID:Controller ID
-Cam ID:Dome ID Number
-Error:Bit error codes are listed in the chart below.
Description
bit7
bit6
bit5 Camera Module Failure
bit4 Pan/Tilt Failure
bit3 RAM of EEPROM Error
bit2
bit1
bit0 Unsuitable Data
Byte3 Byte4 Byte5
Cmd1 Cmd2
Byte3 Byte4 Byte5
Cmd1 Cmd2
Byte6 Byte7 Byte8
Data1 Data2 Data3
Byte6 Byte7 Byte 8
Data1 Data2 Data3
- 5 -
Ver 2.00E
Byte9 Byte10 Byte11
Data4 ETX Checksum
Byte9 Byte10 Byte11
Error ETX Checksum