JVC DT-V1910CG Bedienungsanleitung Seite 24

HOW TO USE EXTERNAL
CONTROL
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 centre.
1. Cable
Prepare a straight cable with a D-sub connector (9-pin, male) and a D-sub
connector (9-pin, male)
2. Communications Specifications
Baud Rate
Data Bits
Parity
Stop Bits
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
ID + Command + Data
B Basic command
D Command for adjusting the picture size
S Command for adjusting the picture quality
M Command for selecting the menu item
F Command for selecting the menu item
W Command for adjusting the white balance
C Command for inquiring for the monitor's status
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.
22
(cont'd)
: 4800/9600/19200 (factory pre-set; 4800)
: 8 bits
: No parity
: 1
Pin No.
1
controller exclusively
2
3
4
5
6
7
8
9
* The 5V power supply of the 1st terminal is for the controller
exclusively for this monitor. Do not use it for other devices.
Characters 00, 01 or No data
00 ~ 08 U, D (U: UP, D: DOWN)
00 ~ 05 U, D (U: UP, D: DOWN)
00 ~ 0E 00, 01, 10, 11
00 ~ 10 00, 01, 02, 03, 04, 05
00 ~ 05 U, D (U: UP, D: DOWN)
00 0 ~ 655
5
9
4
8
3
7
2
6
1
IN terminal OUT terminal
signal signal
5V Power (for
NC
for this monitor)
+
TD TD
+
RD RD
NC NC
NC NC
NC NC
TD– TD–
RD– RD–
NC NC
+
+