Pelco DRD14 用户手册

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

01 to 20

Clear preset XX

01 to 20

Go to preset XX

01 to 20

80 FLIP preset

Set aux XX

01 to 08

Clear aux XX

01 to 08

Remote Reset

Program zone XX

starting point

01 to 08

Program zone XX

ending point

01 to 08

Write character YY

to screen position XX

0 to 27

Clear screen

Zone Scan On

Zone Scan Off

Pattern Start Point

Pattern Stop Point

Run Pattern

Lens Speed

00 to 03

5.2 AMERICAN DYNAMICS

AD2083 TYPE RS-422 CONTROL COMMAND

5.2.1 Protocol

The following describes the protocol used to send commands to the receivers
via RS-422.

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.

The protocol: one start bit, eight bits data, and one stop bit at 2400 baud.

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.