Samsung SCR-3000 Instrukcja Użytkownika Pobierz pdf (Strona 22)

2-5

DIGITAL VIDEO RECORDER

Connection with RS-485

If you control cameras, remote control is allowed through connection with RS-485 (up to

1.2km).

A. Communication method

● Data transmission method: Start-Stop Asynchronized Serial Interface

● Protocol: 8 bit Data, 1 Stop bit, None Parity

● Transmission speed: 4800, 9600, 19200, 38400, 115200 bps

B. RS-485 terminal and Pin specifications

C. Data Format (Samsung Protocol)

DATA +

DATA -

9 Byte Fixed

( ) : Byte numbers

Start Code (A0H)

(1)

Data Byte Type Contents Remarks

Byte 1 Start Code 0xA0 Start of Data Packet

Byte 2 Sender Addr. Transmission Address Source Range (0x00 ~ 0xFF)

Byte 3 Target Addr. Reception Address Destination Range (0x00 ~ 0xFF)

Byte 4 Only Image Recorder Command 0x0A

Byte 5 Key Function Range (0x01 ~ 0xFF)

Byte 6 Command 0xFF 0xFF

Byte 7 0xFF 0xFF

Byte 8 0xFF 0xFF

Byte 9 Check Sum Lower byte of (0xFFFF - (values adding Byte 2 ~ Byte 8))

Start Addr.

(1)

Target Addr.

(1)

Command

(5)

Check Sum

(1)

DATA -

DATA +

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 93 94

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Samsung SCR-3000 Instrukcja Użytkownika Strona 22