LVC-SX703PC_AA4HEL_ENG_MFL-129 11/7/06 12:06 PM Page 38

RS-485 Protocol

Data Communication Format

Data Length: 1 Byte (8 Bit)

Start/Stop Bit: 1 BIT

Parity Bit: None

Baud rate: 9,600 bps

Format

BYTE 1 BYTE 2 BYTE 3 BYTE 4 BYTE 5 BYTE 6

0xC5 CODE1 CODE2 CODE3 CAM_ID *C.S.

*C.S. = Check Sum

The data of total 6 bytes is transmitted from the external RS-485 device to the camera.

BYTE 6 : The value of Check Sum from ‘BYTE 1 ’ to ‘BYTE 5 ’.

ex) In case of transmission, 0xC5, 0x5F, 0x02, 0x00, 0x0A”

C.S. = 0xC5 +0x5F +0x02 +0x00 +0x0A = 0x0130 therefore, C.S. = 0x30

Commands

Function

Command

 

(external device camera)

OSD Menu ON/OFF

0xC5, 0x5F, 0x25, 0x00, ID, C.S.

LEFT Button

0xC5, 0x5F, 0x38, 0x00, ID, C.S.

Right Button

0xC5, 0x5F, 0x39, 0x00, ID, C.S.

Up Button

0xC5, 0x5F, 0x02, 0x00, ID, C.S.

Down Button

0xC5, 0x5F, 0x04, 0x00, ID, C.S.

Menu Button

0xC5, 0x5F, 0x24, 0x00, ID, C.S.

 

 

You must send “Stop” command to camera after sending each command described above.

The “Stop” command is “0xC5, 0x5F, 0x0C, 0x00, ID, C.S.”.

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LG Electronics LVC-SX703PC/OC/MC, LVC-SX703PB/OB/MB instruction manual RS-485 Protocol, Data Communication Format, Commands