Doc # INS-20Z404-27XF
Issue Date: 8/24/2011
Revision: A
Page 19 of 38
9.
Communication Format
RS-232C
Communication Format
Communication between camera and user is available by using RS-232C.
9.1.
Parameter of RS-232C
Baud Rate: 9.6kbps
Start bit: 1
Stop bit: 1
Data bits: 8
None Parity
Flow control: XON/XOFF, RTS/CTS is not supported.
9.2.
Packet Structure
The basic unit of communication is called a
“
PACKET
”
. All bytes of the packet are in ASCII format. The
first byte of the packet is called the
“
Header
”
. The second and third bytes are the
“
ID
”
of the camera.
The forth and the fifth bytes are the
“
Command Message
”
. The sixth to the ninth bytes is the
“
Command Option
”
. The last two bytes are the
“
Check sum
”
of the packet.
The check sum is the sum of 9 bytes (byte0~byte8).
The header must be
„*‟
.
All bytes of the packet must be in all Capital Letters.
Figure 1.
Command Packet Block
