3M MP7640 Multimedia Projector Operators Manual

							313M™ Multimedia Projector MP7640
© 3M IPC 2000
Section 9: Appendix
RS-232C Communication
1. Turn off the projector and computer power supplies and connect with the RS-232C cable.
2. Turn on the computer power supply and, after the computer has started up, turn on the projector
power supply.
Communications Setting
19200 bps, 8N1
1 Protocol
Consist of header (6 bytes) + command data (6 bytes).
2 Header
BE + EF + 03 + 06 + 00 + CRC_low + CRC_high
CRC_low:   Lower byte of CRC flag for command data (6 bytes).
CRC_high:  Upper byte of CRC flag for command data (6 bytes).
3 Command Data 
						

							3M™ Multimedia Projector MP764032© 3M IPC 2000
Section 9: Appendix
Requesting projector status (Get command)
1. Send the request code Header + Command data (‘02H’ + ‘00H’ + ‘xxH’ + ‘yyH’ + ‘00H’) from the
computer to the projector.
2. The projector returns the response code ‘1DH’ + data (2 bytes) to the computer.
Changing the projector settings (Set command)
1. Send the setting code Header + Command data (‘01H’ + ‘00H’ + ‘xxH’ + ‘yyH’ + data) from the
computer to the projector.
2. The projector changes the setting based on the above setting code.
3. The projector returns the response code ‘06H’ to the computer.
Using the projector default settings (Reset command)
1. The computer sends the default setting code Header + Command data (‘06H’ + ‘00H’ + ‘xxH’ + ‘yyH’ +
‘00H’) to the projector.
2. The projector changes the specified setting based to the default value.
3. The projector returns the response code ‘06H’ to the computer.
Increasing the projector setting value (Increment command)
1. The computer sends the command code (‘04H’ + ‘00H’ + ‘xxH’ + ‘yyH’ + ‘00H’ + ‘00H’) to the
projector.
2. The projector increases the setting value on the above setting code.
3. The projector returns the response code ‘06H’ to the computer.
Decreasing the projector setting value (Decrement command)
1. The computer sends the command code (‘05H’ + ‘00H’ + ‘xxH’ + ‘yyH’ + ‘00H’ + ‘00H’) to the
projector.
2. The projector decreases the setting value on the above setting code.
3. The projector returns the response code ‘06H’ to the computer.
When a command sent by the projector cannot be understood by the computer
When the command sent by the projector cannot be understood, the error command ‘15H’ is returned by the
computer. Sometimes the projector ignores RS-232C commands during other works. If the error command
‘15H’ is returned, please send the same command again.
When data sent by the projector cannot be practiced
When the command sent by the projector cannot be practiced, the error code ‘1cH’ + ‘xxxxH’ is returned.
When the data length is greater than indicated by the data length code, the projector will ignore the excess
data code.
Conversely, when the data length is shorter than indicated by the data length code, an error code will be
returned to the projector.
Caution
• Operation cannot be guaranteed when the projector receives an undefined command
or data.
• Provide an interval of at least 40 ms between the response code and any other code.
• The projector outputs test data when the power supply is switched ON, and when
the lamp is lit. Ignore this data.
• Commands are not accepted during warm-up. 
						

							333M™ Multimedia Projector MP7640
© 3M IPC 2000
Section 9: Appendix 
						

							3M™ Multimedia Projector MP764034© 3M IPC 2000
Section 9: Appendix 
						

							353M™ Multimedia Projector MP7640
© 3M IPC 2000
Section 9: Appendix 
						

							3M™ Multimedia Projector MP764036© 3M IPC 2000
Section 9: Appendix
Setting code 
						

							373M™ Multimedia Projector MP7640
© 3M IPC 2000
Section 9: Appendix 
						

							3M™ Multimedia Projector MP764038© 3M IPC 2000
Section 9: Appendix 
						

							393M™ Multimedia Projector MP7640
© 3M IPC 2000
Section 9: Appendix 
						

							3M™ Multimedia Projector MP764040© 3M IPC 2000
3M Austin Center
Building A145-5N-01
6801 River Place Blvd.
Austin, TX 78726-90003M Canada
P.O. Box 5757
London, Ontario
N6A 4T13M Mexico, S.A. de C.V.
Apartado Postal 14-139
Mexico, D.F.  07000
Mexico3M Europe
Boulevard de l’Oise
95006 Cerge Pontoise Cedex
FranceLitho in USA
Copyright © 2000 3M IPC.
All Rights Reserved
78-6970-9032-8 Rev. A
Important Notice
All statements, technical information, and recommendations related to 3M’s products are based on information believed to be reliable, but the accuracy or
completeness is not guaranteed. Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all
risks and liability associated with such use. Any statements related to the product which are not contained in 3M’s current publications, or any contrary
statements contained on your purchase order shall have no force or effect unless expressly set forth in a written agreement signed by an authorized officer of
3M.
Warranty and Limited Remedy.  This product will be free from defects in material and manufacture for a period of two years from the date of purchase.
Exclusion to Warranty:  The lamps are considered a consumable item and are warrantied for 90 days or 180 hours, whichever occurs first. 3M MAKES NO
OTHER WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or
repair the 3M product or refund the purchase price of the 3M product.
Limitation of Liability.   Except where prohibited by law, 3M will not be liable for any loss or damage arising from this 3M product, whether direct,
indirect, special, incidental or consequential regardless of the legal theory asserted.
Let us help you make the most of your next presentation. We offer everything from presentation supplies to tips for better meetings. And  we’re the only
transparency manufacturer that offers a recycling program for your used transparencies. For late-breaking news, handy reference and free product samples,
call us toll-free in the continental United States and Canada, 24 hours a day, or visit our Internet Website.