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20 Pelco Manual C466M-E (6/99)
5.1.2 Extended Commands
Extended commands will always have B0 of Byte 2 set to one. The following num-
bers are in hexadecimal format:
Command Byte 1 Byte 2 Byte 3 Byte 4
Set preset XX 00 03 00 01 to 20
Clear preset XX 00 05 00 01 to 20
Go to preset XX 00 07 00 01 to 20
80 FLIP preset 00 07 00 21
Set aux XX 00 09 00 01 to 08
Clear aux XX 00 0B 00 01 to 08
Remote Reset 00 0F 00 00
Program zone XX
starting point 00 11 00 01 to 08
Program zone XX
ending point 00 13 00 01 to 08
Write character YY
to screen position XX 00 15 0 to 27 YY
Clear screen 00 17 00 00
Zone Scan On 00 1B 00 00
Zone Scan Off 00 1D 00 00
Pattern Start Point 00 1F 00 00
Pattern Stop Point 00 21 00 00
Run Pattern 00 23 00 00
Lens Speed 00 25 00 00 to 03
5.2 AMERICAN DYNAMICS
AD2083 TYPE RS-422 CONTROL COMMAND
5.2.1 Protocol
1. The following describes the protocol used to send commands to the receivers
via RS-422.
a. The hardware interface is four-wire RS-422, where one pair is used to
issue commands to the receiver and one pair is used to receive responses
from the receiver.
b. The protocol: one start bit, eight bits data, and one stop bit at 2400 baud.
2. The message format is 7 of these 10-bit words. Word one is the sync and is set
to 0xFF, word two is the receiver address, words three and four are referred to
as commands, words five and six as data, and word seven is the check sum.
Commands are divided into two categories. The first is referred to as PTZ (pan and
tilt and lens) commands, the second category is Extended commands.