3M M2256PW manual Get Copyright, Mode Down Up, Mode Inactive, Mode Stream

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3M™ Multi-touch Display M2256PW User Guide

35

The illustration below shows the coordinates of the calibration targets and display corners. The corners show the video coordinates in parentheses and the touch screen coordinates in brackets. Note that the touch screen coordinates for the serial interface have their origin in the lower-left corner.

(0, 0) [0, 16383]		(1679, 0) [16383, 16383]
					Upper Right Calibration Target
		(1469, 131)

					X = 1679 – (1680 x 1/8) = 1679 – 210 = 1469


					Y = 0 + (1050 x 1/8) = 0 + 131 = 131

Lower Left Calibration Target
X = 0 + (1680 x 1/8) = 0 + 210	= 210
Y = 1049 - (1050 x 1/8) = 1049 - 131	= 918		(210, 918)
			(210, 918)

(0, 1049) [0, 0]

(1679, 1049) [16383, 0]

Get Copyright

Syntax:	<SOH>Q101<CR>
Response:	<SOH>Copyright © 2010 3M. All rights reserved.<CR>
Description:	This command is used to get copyright information.

Mode Down Up

Syntax:	<SOH>MDU<CR>
Response:	<SOH>0<CR> Positive response.
Description:	Limits touch reports to touchdown and liftoff events only.

Mode Inactive

Syntax: <SOH>MI<CR>

Response:

<SOH>0<CR> Positive response.

Description: Turns off touch reports.

Mode Stream

Syntax:	<SOH>MS<CR>
Response:	<SOH>0<CR> Positive response.
	The controller will respond with acknowledge (ACK) for compatibility. This format is
	the only format supported by this controller.

3M Touch Systems, Inc. Proprietary Information – 37531 Rev D

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Contents 3M Touch Systems, Inc. Proprietary Information 37531 Rev D 3M Multi-touch Display M2256PW User Guide Contents Appendix C Regulatory Information Appendix a 3M PX USB Controller CommunicationsAppendix B 3M PX Serial Controller Communications Intended Use Important Safety InformationIntroduction OverviewExplanation of Signal Word Consequences Maintaining Your Touch Display Important Notes3M Touch Systems Support Services Touch Sensor Care and CleaningContact 3M Touch Systems System Requirements Setting up Your M2256PW Multi-touch DisplayCables Included with Your M2256PW Multi-touch Display Unpacking Your Touch DisplayArm Mounting Option Connecting the Touch DisplayTesting the M2256PW Multi-touch Display Supported Video Display Modes and Refresh Rates Using the Standard Controls for the Video CardApplicable Display Mode and Refresh Rate Refresh Rate Hz Video Card RequirementsMenu/Select Down Up Auto/Exit Power LED Configuring the Display SettingsMultimedia Features Access to the Video ControlsChoices Description Adjusting the M2256PW Video DisplayAudio Tools Multitouch Application Support Enabling Your M2256PW Multi-touch DisplayWindows 7 USB Compatibility All Other PlatformsVideo Alignment Installing 3M MicroTouch Software3M Multi-touch Display M2256PW User Guide Communication Basics 3M PX USB Controller CommunicationsOverview of USB Firmware Communications HID Class Requests Command SetSet Feature Calibration Receiving Reports from the ControllerData Stage Offset Field Size Value Description Calibration Setup Stage Offset Field Size Value DescriptionCalibration Response Command Status Byte Description Determining Target AreasGet Feature GetStatus Setup Stage Offset Field Size Value Description Get Feature GetMaxCountPower On Check Bit Fields Bit Number Description Valid Command Status Field Entries Response DescriptionReset Data Stage Offset Field Size Value Description Set Feature ResetReset Setup Stage Offset Field Size Value Description Offset Field Size Value Description Set Feature -Restore DefaultsCoordinate Data MultiTouch Digitizer mode Async Report Asynchronous ReportsValue Description Touch Report Structure Offset Field3M PX Serial Controller Communications Overview of Firmware CommandsCommunication Parameters Controller Default SettingsOperating Mode Communicating with the ControllerReceiving Responses from the Controller Sending Commands to the ControllerController Initialization Firmware CommandsSOH Cxcr Command Code DescriptionCalibrate MDUCalibrate Procedure Guidelines for Calibrate CommandGet Copyright Mode Down UpMode Inactive Mode StreamOutput Identity Name CommandNull Command Soft ResetSOH Rdcr Restore DefaultsOperating Parameter Default Unit TypeData Sequence Bits Touch Data FormatBit Description Data Sequence Bits FCC-B Regulatory InformationRegulatory Agency Approvals CE Conformity for Europe FCC Warning