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Manafacture: Mitsubishi Electronics
File size: 223.03 kb
File name: hd8000_rs232c_080515.pdf
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manual abstract
• Make sure that your computer and projector are turned off before connection. • Boot up the computer first, and then plug the power cord of the projector. (If you do not follow this instruction, the Com port may not function.) • Adapters may be necessary depending on the PC connected to this projector. Contact your dealer for details. 1. Interface 1.1 Pin assignment of SERIAL terminal (D-SUB 9-pin) Pin No. Name I/O 1 OPEN 2 RXD IN 3 TXD OUT 4 OPEN 5 GND 6 OPEN 7 OPEN 8 OPEN 9 OPEN 1.2 Communications format PROTOCOL RS-232C BAUD RATE 9600 [bps] DATA LENGTH 8 [bits] PARITY BIT NONE STOP BIT 1 [bit] FLOW CONTROL NONE This projector uses RXD, TXD and GND lines for RS-232C control. For RS-232C cable, the reverse type cable should be used. 1 2. Control command diagram The command consists of the address code, function code, data code, and end code. The length of the command varies among the functions. ASCII Character Address code Function code Data code End code ‘30h’ 30h’ Function Data ‘0Dh’ 00 Function Data [Address code] 00 (In ASCII code, ‘30h’ ‘30h’) fixed. [Function code] A code of each fixed control move. [Data code] A code of each fixed control data (number) and not always indicated. [End code] (In ASCII code, ‘0Dh’) fixed. 3. Control sequence Computer Projector 1 2 3 4 1 2 3 4 Sequence Send the command from the personal computer to the projector. The projector will send a return command after it receives an end code. The personal computer checks the command and confirms if the sent command has been received or not. Use the check command to see if the projector has executed the command. Note If the projector does not receive commands normally, that is, if the projector is not connected physically or unable to receive commands, it does not send out a return command. The projector sends out a return command within one second at the latest. Although the projector receives the commands, it in some cases does not execute the commands. This projector sends various codes other than the return code. When having a control sequence by RS-232C, reject other codes from the personal computer. • Although the projector sends out the return command, the command may not take effect in the following cases. (1) During signal switching (2) In the process of the auto position (3) After the power is turned on. The projector receives no commands for about 20 seconds (or for 2 minutes at the longest if the lamp does not light up promptly as the life is expiring.) • When sending commands successively, wait to receive the return command of the current command before sending a next command. • The projector may not receive a command when the splash screen is being displayed immediately after turning on the power. Use command “00r10” to cancel the splash screen. • While using the LAN terminals, the LAN functions take precedence. • For the LAN terminals, the same commands as those for connecting with the TCP/IP (port number 63007) are available. Note, however, that the response becomes slightly slower than when using the RS-232C terminals. [Example] When turning the power ON. (Figures and symbols enclosed in quotation marks are ASCII codes.): Sending commands from the PC, etc. Status code from the projector Description ‘30’ ‘30’ ‘21’ ‘0D’ Command for POWER ON 00! ‘30’ ‘30’ ‘21’ ‘0D’ Command receipt confirmation 00! (Command echo back) • The flowchart on the next page shows the recommended operating sequence for your reference to create a program. 2 [RS-232C control flowchart] Sending out command Awaiting response from projector Awaiting response from projector Checking execution of command (sending out check command) Sending command again No Yes Yes Yes 1 1 10th trial Less than 10 times Projector error Send out “00vER” to check error details. Recover from error state. – To normal operation 4 Enter password. Send out “00PASS****.” Projector is functioning. Use “00FNCOFF” to cancel the current function. 6 5 END No response for 1 second or longer No response for 1 second or longer Sending command again Number of trials without response Sending “00vST” Checking response to “00vST” [Method of checking state of projector] START Check the following. • The projector is not supplied with AC power. > Check that AC power cord is connected. > Turn on the power. (Turn on the circuit breaker or main switch.) • Not connected with the projector. > Check that the RS-232C cable is connected. > Check the RS-232C cable for electrical discontinuity. • The projector is in the state of being unable to send out a command. > Use command “00vST” to check if the projector operates normally. Note: In the following conditions, the projector does not respond even if it operates normally. • Immediately after turning on the power (for about 20 seconds to 2 minutes) • During switching signals (about 10 seconds) • In the process of the auto position (about 10 seconds) • During locking the password 3 4. Command list 4.1 Operation commands (Not executable in stand-by m...