Mitsubishi Electronics WL7200U, WL7050U User Manual

LCD Projector WL7200U/WL7050U

Controlling the projector via RS-232C connection

Contents

1. Introduction ............................................................................................................2

1.1 Connection ............................................................................................................................... 2

1.2 Interface ................................................................................................................................... 2

1.2.1 Pin assignment of SERIAL terminal (D-SUB 9-pin) .............................................................................. 2

1.2.2 Communications format ...................................................................................................................... 2

2. Control command conﬁguration ............................................................................3

3. Control sequence ................................................................................................... 3

4. Execution procedure of RS-232C commands via LAN ..........................................6

5. Command list ......................................................................................................... 7

5.1 General control commands ......................................................................................................7

5.2 Reading commands ................................................................................................................. 7

5.2.1 Status read commands ........................................................................................................................ 7

5.2.2 Read commands for items in INFORMATION menu ............................................................................7

5.2.3 Read commands for other information ................................................................................................ 8

5.3 Remote control key commands ............................................................................................... 9

5.4 Direct commands ................................................................................................................... 10

5.5 Function commands .............................................................................................................. 10

5.6 Menu setting commands .......................................................................................................11

5.6.1 IMAGE menu ...................................................................................................................................... 11

5.6.2 INSTALLATION menu ......................................................................................................................... 11

5.6.3 FEATURE menu ..................................................................................................................................12

5.6.4 SIGNAL menu .................................................................................................................................... 12

5.6.5 NETWORK menu ............................................................................................................................... 13

5.7 Password lock commands ..................................................................................................... 14

1. Introduction

RS-232C crossover cable

D-SUB 9-pin

To SERIAL terminal

To RS-232C terminal

D-SUB 9-pin

This projector is controllable by a personal computer with RS-232C terminal.

PC-controllable functions:

• Turning the power ON or OFF

• Changing input signals

• Inputting commands by pressing the buttons on the control panel and remote control

• Menu setting

[Compatibility with the former models]

To use the RS-232C commands designed for the former models of Mitsubishi projector, by inputting “00COMMAND0”, the projector responds in the same way as the former models. (No NAK is returned. For NAK response, see page 4.) (For the recommended procedure to use the former command systems, see “Controlling the projector using a personal computer” for FL7000U.)

ITEM

Changing the RS-232C command system

Character ASCII code

COMMAND

1.1 Connection Important:

• Make sure to connect one computer to one projector.

• Make sure that your computer and projector are turned off before connection.

• Boot up the computer rst, 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.

Function

43h 4Fh 4Dh 4Dh 41h 4Eh 44h

0 (Former command system), 1 (New command system)

Data

1.2 Interface

1.2.1 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

1.2.2 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 supplied cable (crossover cable) should be used.

2. Control command conﬁguration

Computer

Projector

The command consists of the address code, function code, data code, ACK/NAK, and end code. The length of the command varies among the functions.

Address code Function code Data code ACK/NAK End code ASCII code ‘30h’ ‘30h’ Function Data ‘3Ah’ ‘4Eh’ ‘0Dh’ Character 00 Function Data :N

[Address code] Fixed to 00. (‘30h’ ‘30h’ in the ASCII code) [Function code] Code unique to each control operation. [Data code] Data (value) unique to each control operation (Not always indicated.) [ACK/NAK] Code indicating the NAK return as described below Fixed to :N (‘3Ah’ ‘4Eh’ in the ASCII code. Not added to ACK.) [End code] Fixed to . (‘0Dh’ in the ASCII code)

3. Control sequence

Sequence Note

Send the command from the

personal computer to the projector. After receiving the end code,

the projector sends the return command.

The personal computer checks the return 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.

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. When the received command cannot be executed, NAK is returned (as described below).

This projector sends various codes including the return code. During the control sequence by RS-232C, reject other codes on the personal computer.

• NAK return

In the following cases, the projector returns the command with “:N” added. (1) Though the command sent from the computer is received by the projector successfully, it cannot be

executed because the projector is in the operation prohibition state. (2) The data length of the sent command is incorrect or the command is invalid. (3) The signal length of the command is 48 bytes or longer.

• When a command is sent out during the following operations, it may not be executed.

(1) During signal switching (2) In the process of the auto position (3) After the power is turned on. After the power is turned on, no command is received until the image is displayed. (Usually, it takes about

20 seconds. However, when the lamp illumination takes time, more time will be required accordingly.) In

this case, the projector returns the received command with NAK added.

• The return command is sent out within 1 second. In some cases, the response time takes longer (about 3

seconds).

• 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.

For the use of LAN terminals, refer to “4. Execution procedure of RS-232C commands via LAN”.

• When the NAK isn’t returned, check the RS-232C command system (00COMMAND).

[Example 1] Turning ON the power. (Values enclosed in quotation marks are ASCII codes.):

Command sent from the PC

‘30’ ‘30’ ‘21’ ‘0D’ 00!

Status code returned

from the projector

Description

Command for POWER ON

Command receipt conﬁrmation (Command echo back)

[Example 2] Selecting VIDEO as the input signal during auto positioning (Values enclosed in quotation marks are

ASCII codes.):

Command sent from the PC

30’ ‘30’ ‘5F’ ‘76’ ‘31’ ‘0D’ 00_v1

‘

30’ ‘30’ ‘5F’ ‘76’ ‘31’ ‘3A’ ‘4E’ ‘0D’

00_v1:N

Status code returned

from the projector

Description

(During auto positioning) Command for selecting VIDEO as the input signal is sent out.

The command is received by the projector but cannot be executed. (NAK return)

• The owchart on the next page shows the recommended operating sequence for your reference to create a

program.

Projector error

Send out “00vER” to check error details.

Recover from error state.

0–3

To normal operation

Enter password.

Send out “00PASS****.”

Projector is functioning.

Use “00FNCOFF” to cancel the current function.

Sending “00vST”

Checking response to “00vST”

[Method of checking state of projector]

Sending out command

Awaiting response

from projector

Checking execution of

command (sending out

check command)

No response for 3 seconds or longer

END

NAK returned

Command is sent successfully.

Command execution fails.

Command is sent successfully.

Command is executed successfully.

Command sending fails.

No NAK returned

[RS-232C control ﬂowchart]

START

Check the following.

• Check that the function code is correct.

• Check that the data code is correct.

• Check that the projector is able to

issue the return command.

→ Check the projector’s operation

using the 00vST command.

Note: In the following cases, NAK is

returned even when the projector is in normal condition.

•

Immediately after the power is

turned on

(For status read commands)

approximately for 20 seconds

(For other commands) approxi-

mately for 1 minute

• During input switching

• During auto positioning

• During password lock

Check the following.

• Check that the command begins with “00”.

• The projector is not supplied with AC power.

→ Check that AC power cord is

connected.

→ Turn on the power. (Turn on the

circuit breaker.)

• Not connected with the projector.

→ Check that the RS-232C cable is

connected.

→ Check the RS-232C cable for

electrical discontinuity.

+ 9 hidden pages