Maxtor SLD240 User Manual
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12.2 Communication Protocol
IMPORTANT: This section is designed to allow users to control the DVR via the RS -232 and
RS-485 ports. The following information is intended to be used by qualified professionals.
Do not make any changes to your system’s settings unless instructed by a qualified
technician.
12.2.0 General Command Format
of parameters>, 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 End Code= 0x4f The different command types and their corresponding parameters are as follows: 12.2.1 Keys and signals PC Send: <0x41>, <0x01>, <0x20>, <0x01>, < The value of a specific front panel key > KEY_PLAY 1 KEY_STOP 3 KEY_PAUSE 4 KEY_POWER 5 KEY_REC 6 KEY_SETUP 7 KEY_ENTER 8 KEY_SEARCH 10 KEY_DISPLAY 11 KEY_UP 13 KEY_DOWN 14 KEY_LEFT 15 KEY_RIGHT 16 KEY_MONITOR 36