JVC VR601 instruction manual RS-232 & RS-485 Protocol, Setup, Communication Protocol, Dec Hex

6. RS-232 & RS-485 Protocol

6.1 Setup

6.1.1Use 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. For RS-485, maximum length of cable is 400 meter, and maximum number of nodes is 16.

6.1.2Set the RS-232or RS-485option to ON in the COMMUNICATION page of the setup menu.

6.1.3Set the PC communication parameters: 9600 bps, No Parity, 8 Data Bits, 1 Stop Bit.

6.2Communication Protocol:

6.2.0General 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 ʳ		Keys and Signals
ʳ ʳ ʳ ʳ ʳ ʳ	= 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:

6.2.1Keys and signals

PC Send: <0x41>, <0x01>, <0x20>, <0x01>, <Key Value>, <0x4f>

< The value of a specific front panel key >
	DEC	HEX
KEY_PLAY	1	01
KEY_STOP	3	03
KEY_PAUSE	4	04
KEY_REC	6	06
KEY_SETUP	7	07
KEY_ENTER	8	08
KEY_SEARCH	10	0A
KEY_DISPLAY	11	0B
KEY_UP	13	0D
KEY_DOWN	14	0E
KEY_LEFT	15	0F
KEY_RIGHT	16	10
KEY_MONITOR	36	24
JOG_L	128	80
JOG_R	129	81
KEY_SHUTTLE_L8	130	82 ( -100x, -1/16x )
KEY_SHUTTLE_L7	131	83 ( -100x, -1/16x )
KEY_SHUTTLE_L6	132	84 ( -30x, -1/8x )
KEY_SHUTTLE_L5	133	85 ( -16x, -1/8x )
KEY_SHUTTLE_L4	134	86 ( -8x, -1/4x )
KEY_SHUTTLE_L3	135	87 ( -4x, -1/4x )
KEY_SHUTTLE_L2	136	88 ( -2x, -1/2x )
KEY_SHUTTLE_L1	137	89 ( -1x, -1/2x )
KEY_SHUTTLE_CT	138	8A
KEY_SHUTTLE_R1	139	8B	( 2x, 1/2x )
KEY_SHUTTLE_R2	140	8C	( 4x, 1/2x )
KEY_SHUTTLE_R3	141	8D	( 8x, 1/4x )
KEY_SHUTTLE_R4	142	8E	( 16x, 1/4x )
KEY_SHUTTLE_R5	143	8F	( 30x, 1/8x )
KEY_SHUTTLE_R6	144	90	( 100x, 1/8x )
KEY_SHUTTLE_R7	145	91	( 100x, 1/16x )
SIGNAL_REC_IN	163	A3
SIGNAL_ALARM_RESET	165	A5
SIGNAL_REC_OUT	169	A9
SIGNAL_ALARM_IN	189	BD
SIGNAL_ALARM_OUT	209	D1

NOTE: If SIGNAL_ALARM_IN is requested, alarm recording is performed by non-stop. Please transmit SIGNAL_ALARM_RESET for stopping.

*About (A, B), A means the speed of FAST playback, B means the speed of SLOW playback.

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