APPENDIX #4 - RS232 Remote Protocol

The RS232 / Alarm input allows you to control the DVR system from your PC. In order to achieve this, you will require an RS232 COM Port communication program installed on your PC. There are many of these software programs available on the internet, some of which are free. Please contact the manufacturer SVC if you require this software, or visit www.strategicvista.com for more information.

Use an RS-232C cable to connect the DVR Combo to your computer.

The remote connection on the DVR uses 8 data bits, 1 start bit, and 1 stop bit. Below is an example of the data stream with the control codes shown.

ACT – OxFF

OxCO

ID

CODE

STOP – Ox7F

The PC keyboard simulates the DVR keypad. For example, pressing “r” will make the DVR stop.

 

Note that the letters are case sensitive. Below is a list of corresponding keys, and their codes:

 

 

 

 

 

 

 

 

 

 

FUNCTION

CODE

ASCII

 

FUNCTION

 

CODE

ASCII

CH1

0x31

1

 

ENTER

 

0x42

B

CH2

0x32

2

 

UP

 

0x43

C

CH3

0x33

3

 

DOWN

 

0x44

D

CH4

0x34

4

 

RIGHT

 

0x45

E

PIP_SUB

0x6D

m

 

LEFT

 

0x46

F

STOP

0x72

r

 

CH1_FRZ

 

0x47

G

ALRS

0x68

h

 

CH2_FRZ

 

0x48

H

REW

0x74

t

 

CH3_FRZ

 

0x49

I

QUAD

0x35

5

 

CH4_FRZ

 

0x4A

J

PIP

0x36

6

 

REC

 

0x6E

n

SEQ

0x37

7

 

P-SEARCH

 

0x70

p

MENU

0x39

9

 

R-SEARCH

 

0x71

q

PAN/TILT

0x76

v

 

KEYLOCK

 

0x75

u

POWER

0x57

W

 

PLAY/PAUSE

 

0x41

A

AUDIO_SEL

0x58

x

 

FF

 

0x73

s

EVENT

0X6F

o

 

 

 

 

 

-29-

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Image 33
LOREX Technology SC21CD5444UQ-A80 manual Appendix #4 RS232 Remote Protocol

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