How to Use the External Control (cont.)

￿How to Use the RS-485 Terminal

You can control the monitor from 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 RJ-45 connector.

2.Communications Specifications

Baud Rate:

4800/9600/19200 (factory pre-set; 4800)

Data Bits:

8 bits

Parity:

No parity

Stop Bits:

1 bit

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

1 2 3 4 5 6 7 8

Pin No.

IN terminal

OUT terminal

signal

signal

 

 

 

 

1

TXD+

TXD+

 

 

 

2

TXD–

TXD–

 

 

 

3

RXD+

RXD+

 

 

 

4

NC

NC

 

 

 

5

NC

NC

 

 

 

6

RXD–

RXD–

 

 

 

7

5 V Power

NC

 

 

 

8

GND

NC

 

 

 

*The 5V power supply of the 7th 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

00-0A, 10

U, D (U: UP, D: DOWN)

S

Command for adjusting the picture quality

00-06

U, D (U: UP, D: DOWN)

M

Command for selecting the menu item

00, 01, 03-11

00, 01, 02, 03

F

Command for selecting the menu item

00-0F, 12, 13

00, 01, 02, 03, 04, 05

W

Command for adjusting the white balance

00, 02-06

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-232CÔRS-485) is also required.

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