English-41
English
U-12
Remote control
Carry out as necessary
RS-232C/RS-485 Remote control
When the monitor is connected directly to a computer using an RS-232C cable (commercially available), the following operations
can be controlled via a communication. When using CAT5 Tx BOX (option) and CAT5 Rx BOX (option) for connection, they are
connected with each other via RS-485, allowing long-distance communication control. When the CAT5 Tx BOX is connected using a
USB cable, it functions as an RS-232C (COM) port by a Windows driver.
• Power ON or OFF
• Switching between input signals
• Volume control and mute
• Auto setup
• Check of the internal temperature of the monitor, etc.
CAUTION:
Never connect network devices to the CAT5 IN and OUT connectors. If you do so, they may adversely affect with each other,
causing breakdown.
NOTE:
For connection with a 25-pin serial port connector on the computer, a conversion adapter (commercially available) is required.
1) Interface
PROTOCOL
RS-232C/RS-485 (CAT5)
BAUD RATE
9600 [bps]
DATA LENGTH
8 [bit]
PARITY BIT
NONE
STOP BIT
1 [bit]
FLOW CONTROL
NONE
• For direct connection using RS-232C, use the RXD, TXD, and GND lines.
• For RS-485 communication using the CAT5 Tx BOX (option, DP-2CA5-T), transmission and reception must be controlled
alternately. Select either of the following two transmission/reception control modes using the COM. MODE switch.
LEGACY: DP-1CA5-T compatible mode (The RXD, TXD, RTS, DTR, and GND lines are used.) For a control program, RTS and
DTR as transmit control signals of negative logic are used. The transmission period of TXD and the hold time of
70 ms are defi ned as “Sending (Low),” and the subsequent processes as “Receiving (High).”
AUTO:
RTS/ DTR auto control mode (The RXD, TXD, and GND lines are used.) A response from the monitor will be
returned in 70 ms or later.
2) Control command diagram
The command is structured by the address code, function code, data code and end code. The length of the command is
different for each function.
NOTE:
• This example shows a basic command that is used when a single computer and a single monitor are connected.
When you want to connect multiple monitors or perform complicated control using other commands than the basic
commands, contact your dealer for advanced command specifi cations.
• To send commands with a keypad using terminal software, select “2s” or “30s” for CONTROL TIME OUT in
CONFIGURATION2 in the OSD menu. (Follow the same procedure for LAN control.)
Address code
Function code
Data code
End code
HEX
30h 30h
Function
Data
0Dh
ASCII
‘0’ ‘0’
Function
Data
[Address code]
30h 30h (ASCII code, ‘0’ ‘0’), fi xed.
[Function code]
Code unique to each control function.
[Data code]
Data unique to each control function (Not always indicated by numerical values.)
[End code]
0Dh (ASCII code, ‘
’) fi xed.
