JVC DT-V1710CG, DT-V1910CG HOW to USE External, Control contd,
HOW to USE the RS-485 Terminal

HOW TO USE EXTERNAL

CONTROL (cont'd)

HOW TO USE THE RS-485 TERMINAL

You can control the monitor from the controller (exclusive for this monitor) or your PC via the RS-485 terminal. For details on operating the monitor from the PC, consult the service center.

1. Cable

Prepare a straight cable with a D-sub connector (9-pin, male) and a D-sub connector (9-pin, male)

9	5
	4
8
	3
7
	2
6
	1

2. Communications Specifications

Baud Rate	: 4800/9600/19200 (factory pre-set; 4800)
Data Bits	: 8 bits
Parity	: No parity
Stop Bits	: 1

Communication Cord : ASCII Cord

3.Commands

Format

Header ID Command ID Command Content Data CR

Header

!Control from the PC to the monitor

?Reference from the PC to the monitor @ Answer from the monitor to the PC

Pin No.	IN terminal	OUT terminal
	signal	signal
1	5V Power (for
	controller exclusively	NC
	for this monitor)
2	TD+	TD+
3	RD+	RD+
4	NC	NC
5	NC	NC
6	NC	NC
7	TD–	TD–
8	RD–	RD–
9	NC	NC

*The 5V power supply of the 1st terminal is for the controller exclusively for this monitor. Do not use it for other devices.

ID + Command + Data
B	Basic command	Characters		00, 01 or No data
D	Command for adjusting the picture size	00	~ 08	U, D (U: UP, D: DOWN)
S	Command for adjusting the picture quality	00	~ 05	U, D (U: UP, D: DOWN)
M	Command for selecting the menu item	00	~ 0E	00, 01, 10, 11
F	Command for selecting the menu item	00	~ 10	00, 01, 02, 03, 04, 05
W	Command for adjusting the white balance	00	~ 05	U, D (U: UP, D: DOWN)
C	Command for inquiring for the monitor’s status	00		0 ~ 655

Communication Procedures

The following is the communication procedures.

1.Starting the communication

Receives the connection command (!XXBCN1Cr) from the PC [ Sends the monitor’s status (@XXBOKCr) to the PC

2.Performing the external control

Receives the control command (!XXXXCr) from the PC [ Sends the monitor’s status (@XXBOKCr) to the PC

*The monitor repeats these receiving and sending if necessary.

3.Terminating the communication

Receives the termination command (!XXBCN0Cr) [ Sends the monitor’s status (@XXBOKCr) to the PC

*Hand-shake communication is used. This means that after sending a command to the monitor, the PC must receive a status return from the monitor before sending the next command.

*When the monitor is controlled by a PC via RS-485, a conversion adapter (RS-232Cp[RS-485) is also required.

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