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7. MISCELLANEOUS
7.1 RS-232 & RS-485 Setup & Protocol
7.1.1 RS232 & RS485 Setup
Use a Null Modem cable (the standard RS-232 9 Pin Cable with Pin 2 and Pin 3 exchanged,
see pin configuration chart below for details) to connect the COM 1 on the rear panel of the
DVR to a PC.
Set
the
RS-232
option to
ON
in the
COMMUNICATION
page of the setup menu.
Set the PC communication parameters: 9600 bps, No Parity, 8 Data Bits, 1 Stop Bit.
7.1.2 Communication Protocol
7.1.2.0 General Command Format
<Lead Code = 0x41>, < Dest ID >, < Src ID >, <Main category >, <Second category >,
{<Number of parameters>, <Parameter 1>, <Parameter 2> ..,} <End Code= 0x4f>
Lead Code = 0x41
Dest ID = 0x01
Src ID = 0x20
Main Category = 0x01
Keys and Signals
= 0x02 Command
Second Category = 0x01 Handshake
= 0x02 Request Time/Set Time
=
0x06
Request
System
State
=
0x0b
Time
Search
=
0x10
Request
HDD
Info
=
0x11
Request
REC
Position
=
0x12
Playback
Immediately
End Code= 0x4f
The different command types and their corresponding parameters are as follows:
7. MISCELLANEOUS
Содержание MVDR5000
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