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556. MISCELLANEOUS6.1 RS-232 & RS-485 Setup & Protocol6.1.1 RS232 & RS485 SetupUse 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 theDVR 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.6.1.2 Communication Protocol6.1.2.0 General Command Format, < Dest ID >, < Src ID >, , ,{, , ..,} Lead Code = 0x41Dest ID = 0x01Src ID = 0x20Main Category = 0x01 Keys and Signals= 0x02 CommandSecond 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 ImmediatelyEnd Code= 0x4fThe different command types and their corresponding parameters are as follows:6. MISCELLANEOUS
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