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3M™ MicroTouch™ Controller EX Dual Mode Reference Guide
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3M Touch Systems, Inc. Proprietary Information – TSD-40848A
S
= Status byte, first byte of data. Refer to the following table.
Xx
= X (horizontal) coordinate data; second and third bytes of data.
Yy
= Y (vertical) coordinate data; fourth and fifth bytes of data.
Table 26. Data Sequence
MSB*
Bits
LSB*
Data Sequence 7
6
5
4
3
2
1
0
S Byte
1 1 S6 S5 S4 S3 S2 S1 S0
X Byte
2 0 X6 X5 X4 X3 X2 X1 X0
x Byte
3 0 X13
X12 X11 X10 X9 X8 X7
Y Byte
4 0 Y6 Y5 Y4 Y3 Y2 Y1 Y0
y Byte
5 0 Y13
Y12 Y11 Y10 Y9 Y8 Y7
*
MSB = Most Significant Bit, LSB = Least Significant Bit
The following table defines the status bits (Byte 1) for the Format Tablet data.
Table 27. Format Tablet Status Bits
Bit
Description
Values
S0 – S5 Reserved
—
S6
Proximity (touch state)
1 = Sensor is being touched (a touchdown or a continued touch).
0 = Sensor 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 synchronization Always 1.
Mode Stream
Syntax:
<SOH>
MS
<CR>
Description:
Sends a continuous stream of X/Y coordinate data when you touch the sensor. The
controller continues to send data as long as you touch the sensor. 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.
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.