JVC DT-V1710CGU Instruction Manual - Page 24

HOW TO USE EXTERNAL CONTROL (cont'd) Ⅵ 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) 5 9 4 8 7 3 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 Pin No. 1 2 3 4 IN terminal signal 5V Power (for controller exclusively for this monitor) TD+ RD+ NC OUT terminal signal NC TD+ RD+ NC 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 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. 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. 24