3M M2256PW manual Restore Defaults, Unit Type, SOH Rdcr, Operating Parameter Default, Sohutcr

Page 37

3M™ Multi-touch Display M2256PW User Guide

37

3M Touch Systems recommends that the host system issue a Reset command whenever the host system is powered on and is attempting to establish communication with the controller.

The amount of time needed to execute a Reset command is typically 500 milliseconds with a defined maximum of 2000 milliseconds. Therefore, the application program should wait and be sure it receives the command response before issuing another command to the controller following the reset.

Restore Defaults

Syntax:	<SOH>RD<CR>
Response:	<SOH>0<CR> Positive response.
Description:	Returns to the factory default operating parameters. The Restore Defaults command
	copies the 3M Touch Systems factory default parameters from ROM to the non-volatile
	memory (NOVRAM) and then executes a Reset command.
	The following table lists the factory defaults for the PX controller. The Restore Defaults
	command is useful in situations where inadvertent commands to the controller have
	rendered the sensor inoperative.
	Table 18 PX Factory Default Settings

	Operating Parameter	Default
	Operating Parameter	Default
	Baud Rate	115,200
	Serial Communication Settings	N, 8, 1
	Data Format	Format Tablet Multitouch
	Operating Mode	Mode Stream
	Return to Factory Calibration	Yes

Note: After you issue a Restore Defaults command, you must recalibrate your sensor.

Unit Type

<SOH>UT<CR>

Responds with an 8-character identity string. This string identifies the type of controller currently attached to the system, lists the features supported by the controller, and outputs the status of the controller hardware (a self-test code).

Returns an identification code up to 8 ASCII characters in the following format:

<SOH>TtFfffSs<CR>

where:

Tt	= Two ASCII characters that identify the controller type.

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

Image 37

Contents 3M Touch Systems, Inc. Proprietary Information 37531 Rev D 3M Multi-touch Display M2256PW User Guide Contents Appendix B 3M PX Serial Controller Communications Appendix a 3M PX USB Controller CommunicationsAppendix C Regulatory Information Introduction Important Safety InformationOverview Intended UseExplanation 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 DisplayTesting the M2256PW Multi-touch Display Connecting the Touch DisplayArm Mounting Option Applicable Display Mode and Refresh Rate Refresh Rate Hz Using the Standard Controls for the Video CardVideo Card Requirements Supported Video Display Modes and Refresh RatesMultimedia Features Configuring the Display SettingsAccess to the Video Controls Menu/Select Down Up Auto/Exit Power LEDChoices Description Adjusting the M2256PW Video DisplayAudio Tools Windows 7 USB Compatibility Enabling Your M2256PW Multi-touch DisplayAll Other Platforms Multitouch Application SupportVideo Alignment Installing 3M MicroTouch Software3M Multi-touch Display M2256PW User Guide Overview of USB Firmware Communications 3M PX USB Controller CommunicationsCommunication Basics Set Feature Calibration Command SetReceiving Reports from the Controller HID Class RequestsCalibration Response Command Status Byte Description Calibration Setup Stage Offset Field Size Value DescriptionDetermining Target Areas Data Stage Offset Field Size Value DescriptionGet Feature GetStatus Power On Check Bit Fields Bit Number Description Get Feature GetMaxCountValid Command Status Field Entries Response Description Setup Stage Offset Field Size Value DescriptionReset Setup Stage Offset Field Size Value Description Set Feature ResetReset Data Stage Offset Field Size Value Description Coordinate Data MultiTouch Digitizer mode Async Report Set Feature -Restore DefaultsAsynchronous Reports Offset Field Size Value DescriptionValue Description Touch Report Structure Offset Field3M PX Serial Controller Communications Overview of Firmware CommandsOperating Mode Controller Default SettingsCommunicating with the Controller Communication ParametersReceiving Responses from the Controller Sending Commands to the ControllerController Initialization Firmware CommandsCalibrate Command Code DescriptionMDU SOH CxcrCalibrate Procedure Guidelines for Calibrate CommandMode Inactive Mode Down UpMode Stream Get CopyrightNull Command Name CommandSoft Reset Output IdentityOperating Parameter Default Restore DefaultsUnit Type SOH RdcrBit Description Touch Data FormatData Sequence Bits Data Sequence Bits Regulatory Agency Approvals Regulatory InformationFCC-B CE Conformity for Europe FCC Warning