This document provides technical information for the user. C&B Tech reserves the right
to modify the information in this document as necessary. The customer should make
sure that they have the most recent manual version. C&B Tech holds no responsibility
for any errors that may appear in this document.
•High Sensitive ¼ inch Super HAD CCD
•Built in Auto Focus / Auto Iris
•Optical Power Zoom Lens
A(V)N(P)120’s : 16x
•Digital Zoom
A(V)N(P)120’s : 12x (192x Zoom)
•RS-232C,RS-232 TTL
RS-422, RS-485 communication
•Mirror Image function
•Negative / Positive function
•Preset function
A(V)N(P)120
’
s Protocol Version 1.1
Features
•OSD(On Screen Display)
•AN(P)122F
Freeze, Reverse functions
•AN(P)120L
Day&Night, Low Shutter functions
Freeze function
CNB-A(V)N(P)120 Series
-3-
A(V)N(P)120
’
s Protocol Version 1.1
Basic Functions
A(V)N(P)120 series
Zoom/Focus Lens Control
Zoom/Focus Lens Position Range
•Optical zoom lens position range
Æ 000 hex ~ 940 hex
•Focus lens position controllable range
Æ 17a hex ~ 481 hex
(It is not specified)
•Digital zoom position
Æ 00 hex ~ EA hex
Zoom Lens Speed Mode
•Normal(Slow) Zoom Mode
: Zoom lens speed is slow.
•Quick Zoom Mode
: Zoom lens speed is faster than Slow
Zoom Mode.
•Quick Zoom Trace Mode(QZT)
: It is a zoom trace mode that the zoom
speed is Quick.
•Non Zoom Trace Mode(NZT)
: When the zoom lens moves, the focus
lens doesn’t move, so the picture will not
be focused while the zoom lens moves to
the target position.
One Shot Focus
•The camera starts the auto focusing
action only one time.
•When the One Shot Focus Command is
sent, the focus lens moves to adjust the
focus for the subject.
Zoom Trace Mode
Zoom Trace : If the zoom lens moves, the
focus lens also moves. The focus lens will be
moved to a certain calculated position.
So, the picture will be focused while the zoom
lens moves to the target zoom position.
•Slow(Normal) Zoom Trace Mode(SZT)
: It is a zoom trace mode that the zoom
speed is Slow(normal).
Auto zoom
•The zoom lens have a repeated action in
a certain zoom range.
-4-
A(V)N(P)120
’
s Protocol Version 1.1
Focus Lens Control Mode
•Auto Focus Mode
Æ User can not control the focus lens.
•Manual Focus Mode
Æ User can control Focus lens in the
restricted range of calculated by camera
microcomputer.
•Special Focus Mode
Æ User can control Focus lens as wishes.
The controllable range of focus Lens is
the total focus range(17a ~ 481 hex).
At this mode, the focus lens is controlled
by user only.
(!) Auto/Manual mode is called as basic mode.
(!!) Even if the current focus mode is Special
mode, you can set the Auto and Manual
mode as basic focus mode.
Rain Focus Mode
Rain Focus Mode protect focusing in a certain
distance. If the object is placed within the rain
focus distance, the camera can’t focus to the
object
•1m rain focus mode
•50cm rain focus mode
•10cm rain focus mode
•1cm ~ 10cm rain focus mode
(!!) see the Focus Control Commands
(Example) 50cm rain focus mode
Non focusing region
(0cm ~ 50cm)
Focusing region
(50cm ~ infinite)
camera 50cm
Focus Lens Operation
Focus Mode
Contents
Auto focusing after
zoom trace action
Auto focusing in
normal condition
Auto focusing in One
Shot AF command
Near / Far action
(Key Action command)
S-Near/S-Far action
(Key Action command)
Controllable focus
range
Auto
Not
speci
fied
Manu
al
Not
speci
fied
Special
XOOZoom Trace function
XOO
XXO
OOO
XO(*)OX
OOX
Full
range
(*) X : in case the basic mode is Auto mode
O : in case the basic mode is Manual mode
-5-
A(V)N(P)120
’
s Protocol Version 1.1
Preset Operation
Internal Preset Mode
•In this mode, the camera memorizes the
Zoom/Focus/Digital zoom posi tion into
the Internal Nonvolatile Memory of the
camera.
•Total 64 presets
External Preset Mode
•In this mode, the camera memorizes the
Zoom/Focus/Digital zoom posi tion into
the Internal Volatile Memory of the
camera.
•Total 8 presets
Preset Response Packet
(Example) Preset Position Moving Action
Start
Receive command
(Move to Internal Preset No.7)
* 00 C8 07 00 CC
Received Packet
is Correct ?
Yes
Send Command
Response Packet ?
No
Start
Moving to the Preset Position
No
Yes
(Command Response)
End
Send
*00000000AA
•It is a response that the zoom/focus lens
finish moving to the selected preset
position.
•Transmission of this packet is deci ded by
the Transmission Preset Response Packet
(see Preset Control Commands).
•Preset Response Packet
: * NN 11 11 11 YY
External Preset Position Saving Method
Select External Preset Number.
Memorize zoom lens position
Arrive at the
Preset Position No.7 ?
Yes
Send Preset
Response Packet ?
No
No
Yes
End
Internal Preset Position Saving Method
Select Internal Preset Number.
Move zoom/focus lens
to internal preset position
what you want to save.
Send
*00111111B0
(Preset Response)
Memorize focus lens position
Memorize digital position
Memorize this position
as Internal preset position
-6-
A(V)N(P)120
’
s Protocol Version 1.1
Key Action Command(*NN75PPXXYY)
•It is a basic camera control command.
•Key Code
: It is a command option of key action
command.
•TheKey Stop command of key action
command(
*NN7509XXYY)
: This command must be followed by
key action commands.
•Continuous key action .
: If you want continuous key action
service, do not send the key stop
command until you want to stop the
continuous key action.
•See the Key Action Command List.
(Example) Zoom in(Tele) action
Start
Receive Key Tele command
(* NN 75 01 XX YY)
Start Tele Action
Continuous Tele
Received Stop Key ?
(*NN 75 09 XX YY)
Yes
Stop Tele Action
End
action
No
(Example) Key Action command “Mirror”
<Host>
Start
Send Key Action command
“Mirror”
(* NN 75 18 XX YY)
More than 25ms delay
Send Key Action command
“Stop”
(* NN 75 09 XX YY)
End
(In the position of the microcomputer of camera)
<Camera>
Start
Receive Key Action command
“Mirror”
(* NN 75 18 XX YY)
Key Action “Mirror”
Received Key Stop command ?
(*NN 75 09 XX YY)
Yes
Complete Key Action “Mirror”
No
-7-
End
(Example) Successive Key Action commands
“Mirror” Æ “Negative”
(False Application)
Key action command “Mirror”
* NN 75 18 XX YY
Don’t Send Key action “Stop”
User
(PC)
Key action command “Negative”
* NN 75 19 XX YY
A(V)N(P)120
<Camera><Host>
Execute
Mirror Action
Stop Check
Don’t execute
Negative action
’
s Protocol Version 1.1
(Right Application)
<Camera><Host>
Key action command “Mirror”
* NN 75 18 XX YY
Execute
Mirror Action
Key action command “Stop”
* NN 75 09 XX YY
Stop Check
User
(PC)
Key action command “Negative”
* NN 75 19 XX YY
Execute
Negative action
Key action command “Stop”
* NN 75 09 XX YY
Stop Check
(!!) User must send Key Action command “STOP” before next command.
If you don’t send Key action command “STOP”,
the camera will not operate on Next Key action command.
-8-
A(V)N(P)120
’
s Protocol Version 1.1
General Operation
Camera ID
•00 hex ~ FF hex(256 IDs)
Camera ID check Mode
•ID check Skip Mode
: The camera will not check the camera
ID.
•ID check Mode
: The camera will check the camera ID.
If the ID doesn’t identical to the Current
camera ID, the received command will
be ignored and deleted.
•See the General Control Commands-1
Lens Initial Action
Initial LOGO change
Initial logo can be changed as another
characters. But it is possible in the production
line only. Total 3 line, 12 characters per line,
Total 36 characters.
Default logo : “WAIT”
Another logo example
“WELCOME
TO
CNB TECH”
Freeze function
•A(V)N(P)120F’s, A(V)N(P)120L’s
Freeze : still picture
If the camera operates more than 24 hours.
then it is recommended that you execute
the camera initial action(lens initial command).
•See General control commands-2.
Motion Detection function
•If the camera detect some movement, it
displays “MD” in the upper side of
screen and transmit “Motion detected
Packet”.
•Motion Detected Response Packet
* NN DD DD DD YY
•User can control the sensitivity of motion
detect.
Reverse function
•A(V)N(P)120F’s model only
•Reverse : the picture is rotated in a 180degree arc.
•See the General Control Commands-2
•See General Control Commands-1.
-9-
A(V)N(P)120
’
s Protocol Version 1.1
Day&Night / Slow Shutter function
(AV) v3.0
•A(V)N(P)120L’s model only
•See the General Control Commands-2
Day&Night
•Use under low light condition for
continuous surveillance.
Day&Night Mode
•OFF mode
Disable all the Day&Night function.
In this mode, the Slow shutter function
cam operate.
Slow shutter Maximum Field Number
Index
00
Maximum field
00
0201
0402
0803
1204
1605
2406
3207
6408
12809
•See the General Control Commands-2
•See the Key Action Commands-2
Sensitivity Level of Slow shutter
•AUTO mode
Toggle as the brightness of a picture,
day mode ÅÆnight mode
In this mode, the Slow shutter function
can not operate.
•ON mode
Night mode always.
In this mode, the Slow shutter function
can not operate.
Slow shutter function
•Use under very low light condition for
full color surveillance.
•Slow shutter function can operate in
Day&Night OFF mode.
•Slow shutter max field
It is a maximum accumulated field
number.
•Slow shutter max field index
It indicates a maximum accumulated
field.
•High Sensitivity of Slow shutter
The changes of field number is very
sensitive to changes in brightness.
Communication between camera and user is
available by using RS-232C.
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.
Packet Structure
The basic unit of AN200’s communication is
called ‘PACKET’.
All bytes of the packet are ASCII format.
The first byte of the packet is called ‘Header’.
And the second and third bytes are ‘ID’ of
the camera. And the forth and the fifth
bytes are ‘Command Message’. And from
the sixth to the ninth bytes are ‘CommandOption’.
And the last two bytes are ‘Check sum’ of
the packet.
The check sum is sum of 9 bytes(byte0~byte8).
•The header must be ‘*’.
•All bytes of the packet must be a Capital
Letter.
Byte
Packet(11bytes)
Header
0
*
0 0 1 0 1 0 1 0X X X X X X X X
MSBLSB
Camera ID
1
IDH2IDL3CMH4CML5CO16CO27CO38CO49CSH10CSL
Command
message
Command Packet Block
-11-
Command OptionCheck Sum
MSBLSB
A(V)N(P)120
’
s Protocol Version 1.1
Bytes of a packet
•Byte 0: Header
It must be the ASCII code ‘*’ (2A hex)
•Byte 1: High character of camera ID
Byte 2: Low character of camera ID
•Byte 9: High byte of check sum
Byte 10: Low byte of check sum
Check Sum Method
The value of check sum is calculated as
follows.
Check Sum = Byte0 + Byte1+ … + Byte8
Ex) if ID = 43 d (2B hex), command = 75 hex,
command option = 0000
command byte0~byte8 : * 2B 75 0000
ASCII format
: 2A 32 42 37 35 30 30 30 30
Sum = 2A+32+42+37+35+30+30+30+30
= 1CA hex
So, the Check Sum = CA
So the complete command packet
= * 2B 75 0000 CA
Response from the camera
If the command packet is transmitted to the
camera accurately, the camera will send the
‘response packet’. If the camera doesn’t
receive the right command packet, it will not
send any response packet.
Header
Byte
0
*
1
D1
2
D2
3
D3
Response Time
Most of the response packet will be transmitted
as soon as the camera received the command
packet.
This time is more than 2ms.
Packet(11bytes)
Response DataCheck Sum
4
D4
5
D5
6
D6
7
D7
8
D8
9
CSH10CSL
0 0 1 0 1 0 1 0X X X X X X X X
MSBLSB
Response Packet Block
-12-
MSBLSB
Communication Time Delay
A(V)N(P)120
’
s Protocol Version 1.1
When transmitting 1 packet(11 bytes), keep 2
milli-seconds waiting time between bytes.
byte 0
9600bps
Byte delay Packet delay
2msec
1’st command packet
byte2
Delay Time Setting
Advice for communication
After transmitting the first packet, wait for
25 ms to transmit next command packet.
•Byte delay time > 2ms
•Packet delay time > 25ms
*) Byte delay and Packet delay is a time delay
for stable communication.
byte10
25 msec
byte0
2’nd command pac ket
•If the command packet is transmitted
only 4 bytes, then the camera will wait
for remain 7 bytes continuously.
At that moment, if a new packet is
transmitted to the camera, the previous 4
bytes will be ignored.
•If the camera doesn’t send any response
packet, there should be some troubles in
communication line or any other
communication condition.
•If the camera response mode is Skip
Command response packet mode, then
the camera will not send Command
response packet. Even if the response
mode is Skip Command response packet
mode , the Data response packet will be
transmitted to PC.
-13-
A(V)N(P)120
’
s Protocol Version 1.1
Command List
A(V)N(P)120’s RS-232C
Command Reference
All of commands must be capital letters.
•‘*’ : Header
•‘X’ : Don’t Care
•‘x’ : Not specified
•‘NN’: Camera ID
•‘YY’ : Check Sum
•‘Z’,’S’,’M’,’P’,’Q’ : Command Option
•‘R’ : Response Packet Data
•‘ ‘ : Indicate Response packet
•(!!) : Caution
•(AV) : Allowed camera version
The command was allowed at the camera
micro computer version x.x.
Not describe : allowed all version.
Response Packet
If the camera receives any command, it will
judge the Response packet. If the
command packet hasn’t any error, then the
camera will transmit the response packet.
•Command Response Packet
It is a response that the camera received
the command packet correctly.
It has none information of camera status.
It indicates only that the command is
successfully received.
format : * 00 00 00 00 AA
Caution) This manual did Not describe
Command response packet.
•Data Response Packet
It is a response of the camera status or
zoom/focus position, or any other
information of the camera.
-14-
format : * QQ RR SS MM YY
•Preset Action Finished Response
Packet
It is a response that the camera finish
moving to the target preset position.
Format : * NN 11 11 11 YY
A(V)N(P)120
’
s Protocol Version 1.1
•Motion Detected Response Packet
If the camera detect motions, the camera
will be send Motion Detected Response
Packet. The motion detection area and
sensitivity is set by user – see the
General Control command table.
Format : *NNDDDDDDYY
( Set the Response Packet )
Response Packet
Command Response
Packet
Data Response
Packet
Format
*00 00 00 00 AA
*QQRRSSMMYY
*NNA800XXYY
•One Shot AF Finished Response
Packet
If user command the One shot AF action
command, then the camera will execute
one shot AF action. After the action, the
camera will send the One Shot AF
Finished Response Packet.
Format : *NNAAAAAAYY
Set the Transmission of Response Packet
Set
(Enable mode)
Non
Release
(Disable Mode)
*NNA801XXYY
Non
Example of
Commands
(cam id = 00)
*00710000B2
(reset)
*00000000AA
*007C0200C6
(read camera status)
*01000000AB
Preset Action
Finished Response
Packet
Motion Detected
Response Packet
One Shot AF
Finished Response
Packet
*NN 111111 YY
*NNDDDDDDYY
*NNAAAAAAYY
*NNAA01XXYY
*NNA102PSYY
*NN9F01XXYY
*NNAA00XXYY
*NNA100XXYY
*NN9F00XXYY
(Example) One Shot AF & One shot AF finished response packet (Camera ID = 00)
End
Send
*00000000AA
(Command Response)
Start
Receive One shot AF command
* 00 A0 00 00 BB
No
Yes
Received Packet
is Correct ?
Send Command
Response Packet ?
No
Yes
Start
One Shot AF action
Finished AF?
Yes
Send One Shot AF
Response Packet ?
No
End
*00C60100C4
(move to external
preset 01)
*00 111111 B0
If motion is detected
*00DDDDDD22
*00A00000BB
(one shot AF)
*00AAAAAA10
No
Yes
*00AAAAAA10
(One Shot AF Response)
Send
-15-
General Control Commands - 1
A(V)N(P)120
’
s Protocol Version 1.1
Command
Message
ID read
Command Packet
*NN71XXXXYYReset camera
*NN72XXXXYYID on/off
*NN73XXXXYY
*RR000000YY
*NN74PPXXYYID change
*NN75PPXXYYKey Action
*NN76PPXXYYPower on/off
Command
Option
PP
Contents
Reset the camera
Toggle the camera ID.
ON ÆOFFÆON…..
Read Current Camera ID
x
Æ 00 ~ FF hex(total 256 IDs) Camera IDRR
Change Camera ID
Æ 00 ~ FF hex(total 256 IDs) New Camera IDxPP
Key Action will be activated by this command.
Æ Key Code
xPP
See Key action command
Camera Power ON/OFF
ÆOFF
00
ÆON
01
Set
the transmission
of Command
Response Packet
Motion Detection
*NNA4PPXXYYID check
*NNA8PPXXYY
*NNA1QQPSYY
PP
PP
QQ
P
S
Camera will (not) check the camera ID
ÆDisable ID check
00
ÆEnable ID check
01
(Don’t)Transmit Command Response Packet
ÆEnable Transmission of Command Response Data
00
ÆDon’t Transmit the Command Response Data
01
ÆDisable Motion Detection Function
00
ÆDisplay only “MD” in the screen
01
ÆDisplay “MD” and transmit MD Alarm Packet
02
ÆMD area : Upper side of the picture
0
ÆMD area : Lower/Left/Right side of the picture
1
ÆMD area : Center of the picture
2
ÆMD area : Whole Region of the picture
3
Æ2 hex ~ F hex : MD Sensitivity
x
(high sensitivity ~ low sensitivity)
(!!) Motion Detection Response(Alarm) Packet :
*NNDDDDDDYY
(ex) Set “MD” and transmission of the MD Response
packet, “MD” area is Center, MD sensitivity 7.
* NN A1 02 27 YY
-16-
General Control Commands - 2
A(V)N(P)120
’
s Protocol Version 1.1
Command
Message
Freeze/Live
Reverse/Normal
Change
Day&Night
mode
Set the Slow
shutter max field
Command Packet
*NNADXXXXYYLens Initial
*NNAEPPXXYY
*NNAFPPXXYY
*NN9DXXXXYY
*NN9CPPXXYY
Command
Option
PP
PP
PP
--
01
00
01
00
--
00~
09
Contents
Execute Lens Initial action. After this action, the
zoom and focus lenses will be moved to the working
position. And continue the previous working.
If this lens initial action is finished, then the
Command Response Packet will be transmitted.
ÆFreeze the picture
ÆLive (release the freeze state)
(!!) AN(P)122F,AN(P)120L model only
ÆReverse the picture (rotate 180 degrees)
ÆNormal state (release the reverse state)
(!!)AN(P)122F model only
Change Day&Night mode
…Æ OFF Æ AUTO Æ ON Æ OFF Æ ….
ÆSlow shutter max field index(00~09)
Index : 00 01 02 03 04 05 06 07 08 09
Max Field : 00 02 04 08 12 16 24 32 64 128
Read the
Sensitivity level
of Slow shutter
Set the
Sensitivity level
of Slow shutter
*NN9AXXXXYY
*RR000000YY
*NN9BPPXXYY
RR
PP
00 ~
1F
00 ~
1F
Æ Sensitivity level of Slow shutter
Level Range : 00 ~ 1F
Æ Sensitivity level of Slow shutter
Level Range : 00 ~ 1F
-17-
Focus Control Commands
A(V)N(P)120
’
s Protocol Version 1.1
Command
Message
Set
Focus Auto
Mode
Set
Focus Manual
Mode
Set
Focus Special
Mode
One shot Auto
Focus
Protect Auto
Focusing
Command Packet
*NN4EXXXXYY
*NN4FXXXXYY
*NNABPPXXYY
*NNA0XXXXYY
*NNA2XXXXYY
Command
Option
PP
Contents
Set Focus Mode as Auto Focusing Mode
(Basic focus mode)
Set Focus Mode as Manual Focusing Mode
(Basic focus mode)
Set Focus Mode as Special Focusing Mode
00
ÆDisable Focus Special Mode, set Basic focus mode
only
ÆSet Focus Special Mode
01
Execute Auto Focusing only one time
(!!) See Key Action Commands-2
Toggle command
Protect All Auto Focusing function.
ProtectÆreleaseÆprotectÆreleaseÆ…
ÆAuto Mode
ÆSpecial
ÆIndoor
ÆOutdoor
ÆManual
ÆPush Auto
Æ 00 hex ~ 60 hex : Manual WB control dataRR
Æ 00 hex ~ 60 hex : Manual WB control dataPP
Æ 00 hex ~ 0F hex : Sharpness dataRR
Æ 00 hex ~ 0F hex : Sharpness dataPP
Æ 00 hex ~ FF hex : RED adjust data RR
-24-
Camera Status Control Commands - 4
A(V)N(P)120
’
s Protocol Version 1.1
Command
Message
Read BLUE
adjust data at
Special WB
mode
Set RED adjust
data at Special
WB mode
Set BLUE adjust
data at Special
WB mode
Read
Digital Effect
status
Command Packet
*NNB8XXXXYY
*RR000000YY
*NNB9PPXXYY
*NNBAPPXXYY
*NN92XXXXYY
*RR000000YY
(AV) v2.7
Command
Option
RR
Contents
Æ 00 hex ~ FF hex : BLUE adjust data RR
Æ 00 hex ~ FF hex : RED adjust data PP
Æ 00 hex ~ FF hex : BLUE adjust data PP
Æ Current Digital Effect status
RR : 1byte hex
bit7 : not used, bit6 : not used
bit5: <1>mosaic On <0> off
bit4: <1>monochrome <0> color
bit3 : <1>negative On <0>off
bit2 : <1>mirror On <0>off
bit1 : <1>art On <0>off
bit0 : <1>wide cinema On <0>off
This Command must be followed after the other key action commands below.
If continuous key service is needed, don’t send this command.
And, when you want to stop the continuous action, send this Stop command.
Non Key Service
Slow zoom Tele
Quick zoom Tele
Slow zoom Wide
Quick zoom Wide
Move focus to Far (in manual focus mode)
Move focus to Near(in manual focus mode)
Move focus to S-Far (in manual focus mode) (1step)
Move focus to S-Near(in manual focus mode)(1step)
Toggles Power ON/OFF
Toggles Focus Auto/Manual Mode
Activates focus auto Action only one time(in manual focus mode)
In Menu mode, toggles item selection mode / item adjust mode
Initialize camera to Manufacturer’s conditions
Toggles Function OSD Off/On mode
Toggles Menu On/Off
Toggles Menu On/Off
Change OSD language
Toggles Backlight mode
Toggles Flicker mode
Sutter speed counter Up
Sutter speed counter Down
Switches Digital Effect modes
Toggles Mirror mode
Toggles Negative mode
Toggles Mono/Color mode
Change White Balance mode
Sharpness Data Up
Sharpness Data Down
Brightness Data Up
Brightness Data Down
•In Hue adjust WB mode, Hue up(the picture become Reddish)
•In Hue adjust WB mode, Hue down(the picture become Bluish)
•Set AE mode to Manual mode
•Increase Iris Level
•Decrease Iris Level
Increase AGC gain
Decrease AGC gain
External LED On/Off toggle
Start Auto Zoom Action
Set AGC fix mode
Toggles Wide Picture mode
Toggles Mosaic mode
Toggles Art mode
Auto Panning action(only act in digital zoom region)
Pan Right action(only act in digital zoom region)
Pan Left action(only act in digital zoom region)
Tilt Up action(only act in digital zoom region)
Tilt Down action(only act in digital zoom region)
Auto Tilting action (only act in digital zoom region)
Step Tele
Step Wide
Memory Board Reset , AN(P)122F,120L model only
Toggles Freeze/Live mode , AN(P)122F,120L model only
Toggles Reverse/Normal mode ,AN(P)122F model only
Execute Auto Focusing one time
Day&Night mode change, OFFÆAUTOÆON, AN(P)120L only
Slow shutter max field up, AN(P)120L only
Slow shutter max field down, AN(P)120L only
-27-
Lens Refresh Commands
A(V)N(P)120
’
s Protocol Version 1.1
Command
Message
Read Refresh
On/Off Status
Set Refresh
On/Off Status
Read Refresh
Time Period
Set Refresh
Time Period
Lens Refresh
Command Packet
*NNBC0000YY
-> *RRQQ0000YY
*NNBDPP00YY
*NNBE0000YY
->*RR000000YY
*NNBFPP00YY
*NNAD0000YY
Command
Option
RR
RR
PP
00
01
00
01
Contents
X
XPP
Camera ID
Auto Refresh Off
Auto Refresh ON
Auto Refresh Off
Auto Refresh On
01(Hex) ~ FE(Hex)
1Hour ~ 7 daysXRR
01(Hex) ~ FE(Hex)
1 Hour ~ 7 days
Lens Refresh
Same as Lens Initial Command
Lens Refresh
Request
Lens Initial End
->*NNCCCCCCYY
->*NNBBBBBBYY
Lens Initial request to Camera Control Device
Lens Initial End
-28-
A(V)N(P)120
Pelco “D” Protocol Commands
1. Pelco “D” Byte Format
RS485, 2400bps, 1 Start bit, 8 data bits, 1 stop bit, no parity
2. Pelco “D” Message Format
The Sync Byte is always 0xFF.
The Address is the logical address of the receiver/driver device being controlled.