RS-232C Control Codes - Mitsubishi Presentation Products

Controlling the LCD monitor via RS-232C Remote ControlThis LCD monitor can be controlled by connecting a personal computer with a RS-232C terminal.Functions that can be controlled by a personal computer are:• Power ON or OFF• Switching between input signalsEnglishConnectionLCD Monitor + PCPCRS-232C CableNOTE: If your PC (IBM or IBM compatible) is equipped only with a 25-pin serial port connector, a 25-pin serial portadapter is required. Contact your dealer for details.1) InterfacePROTOCOLBAUD RATEDATA LENGTHPARITY BITSTOP BITFLOW CONTROLRS-232C9600 [bps]8 [bits]NONE1 [bits]NONEThis LCD monitor uses RXD, TXD and GND lines for RS-232C control.For RS-232C cable, the reverse type cable should be used.2) Control command diagramThe command is structured by the address code, function code, data code and end code. The length of thecommand is different for each function.HEXASCIIAddress code30h 30h'0' '0'Function codeFunctionFunctionData codeDataDataEnd code0Dh[Address code][Function code][Data code][End code]30h 30h (In ASCII code, '0' '0') fixed.A code of each fixed control move.A code of each fixed control data (number) and not always indicated.0Dh (In ASCII code, ' ' ) fixed.English-29

3) Control sequence(1) The command from a computer to the LCD monitor will be sent in 600ms.(2) The LCD monitor will send a return command 600ms* after it has received and encoded. If the command isn’treceived correctly, the LCD monitor will not send the return command.(3) The personal computer checks the command and confirms if the command, which has been sent, has been executed or not.(4) This LCD monitor sends various codes other than return code. When having a control sequence by RS-232C, reject othercodes from personal computers side.*: The sending time of return command may delay depending on the condition (during changing of the input signal, etc.).Example: Turn the power ON ( ’ ’ is for ASCII code)Sending commandsfrom the PC30 30 21 0D’0’ ’0’ ’!’ ’ ’Status code fromLCD monitor30 30 21 0D’0’ ’0’ ’!’ ’ ’MeaningCommand forPOWER ONCommand received(Command echoed back)4) Operation commandsThe operation commands execute the basic operation setting of this LCD monitor.It may not operate when changing the signal:Operation ASCII HEXPOWER ON ! 21hPOWER OFF " 22hINPUT RGB 1 _r1 5Fh 72h 31hINPUT RGB 2 _r2 5Fh 72h 32hINPUT RGB 3 _r3 5Fh 72h 33hINPUT VIDEO _v1 5Fh 76h 31hINPUT DVD/HD _v2 5Fh 76h 32hINPUT S-VIDEO* _v3 5Fh 76h 33h• POWER OFF command should be operated over 1 minute after the power is turned on.• POWER ON command should be operated over 1 minute after the power is turned off.* S-VIDEO is SEPARATE only5) Read commandHost computer sends the command without Data-code to monitor.After receiving this command, the monitor returns the command with Data-code of current status to host computer.< ex. > When Host computer ask Power status of monitor, the status of monitor is powered-on.Command from computer Command from Monitor Detail of command30 30 76 50 0D 0''0'v''P'[enter] Ask about the power status of monitor.30 30 76 50 31 0D '0''0''v''P''1'[enter] Monitor is powered-on.Structure of the Read-commandASCIIHEXFunction Data (Receive) Function Data (Receive)POWERON vP 1 76 50 31OFF(stand by) vP 0 76 50 30RGB-1(DVI-D) vI r1 76 49 72 31RGB-2(D-SUB) vI r2 76 49 72 32InputRGB-3(BNC) vI r3 76 49 72 33Video vI v1 76 49 76 31DVD/HD vI v2 76 49 76 32S-VIDEO vI v3 76 49 76 33Picture modeHIGHBRIGHT vM p1 76 4D 70 31STANDARD vM p2 76 4D 70 32TemperatureAround resolutionMain board 1˚Ctc1(ex.) +2574 63 31 2B 20 32 35of InternalAround resolutionmonitorPower PCB 1˚Ctc2(ex.) +3174 63 32 2B 20 33 31English-30