3M M2256PW manual Name Command, Null Command, Output Identity, Soft Reset, Xxxx

36 3M™ Multi-touch Display M2256PW User Guide

Description: This is the default mode of operation at power up. Touch reports include touchdown and liftoff events as well as continuing touches.

Name Command

Syntax: <SOH>NM<CR>

Response: <SOH>0<CR> Positive response.

Description: Returns a name string

Null Command

Syntax:	<SOH>Z<CR>
Response:	<SOH>0<CR> Positive response.
Description:	Queries the controller and waits for a response.
	Use Z to determine that you are communicating with the controller or to make sure that a
	utility is communicating with the controller. Using this command does not affect the
	controller’s current operating parameters.

Output Identity

Syntax:	<SOH>OI<CR>
Response:	<SOH>ADXxxx<CR>
	where:
	AD	= Two ASCII characters that describe the type of 3M Touch Systems controller.
	Xxxx	= This is a unique identifier not necessarily the actual firmware revision
		number.
Description:	Returns a 6-character identifier, which describes the controller type and the firmware
	version number. .

Soft Reset

Syntax:	<SOH>R<CR>
Response:	<SOH>0<CR> Positive response.
Description:	Initializes the hardware and the firmware, causes the controller to stop sending data, and
	recalculates the environmental conditions (for example, stray and offset values). The
	Reset command also cancels the Calibrate command and returns the controller to normal
	operation.

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