3M EX II 3000SP Mode Stream, Null Command

EX II 3000SP Controller Communications			29
	Table 9 Format Tablet Status Bits
	Bit	Description	Values
	S0 – S5	Reserved	—
	S6	Proximity	1 = Touch screen is being touched (a touchdown
		(touch state)	or a continued touch).
			0 = Touch screen is not being touched (a touch
			liftoff or inactive).
			When the proximity bit changes from 1 to 0
			(touch liftoff), the controller outputs one final set
			of X/Y coordinate data with the bit equal to 0 and
			the X/Y coordinate data equal to the last touch
			point.
	S7	Packet	Always 1.
		synchronization

Mode Stream

Syntax: <SOH>MS<CR>

Description: Sends a continuous stream of X/Y coordinate data when you touch the screen. The controller continues to send data as long as you touch the screen. The controller sends the data even if the touch is stationary and unchanging.

The format of the coordinate data depends on the last format command received by the controller.

Format Raw automatically uses Mode Stream to send X/Y coordinate data. Response: <SOH>0<CR> Positive response

Null Command

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

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