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3M™ MicroTouch™ Controller SX112 Reference Guide
3M Touch Systems, Inc. Proprietary Information
Pen/Finger
Syntax:
<SOH>
PF
<CR>
Description:
The default setting for the SX112 controller. It will recognize touch from either the pen
or finger.
Response:
<SOH>
0
<CR> Positive response
Pen Only
Syntax:
<SOH>
PO
<CR>
Description:
The controller will disable finger touch and will only respond to the pen.
Response:
<SOH>
0
<CR> Positive response
Reset
Syntax:
<SOH>
R
<CR>
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 Format Raw, Calibrate Raw, and Calibrate Extended
commands and returns the controller to normal operation.
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 ranges from 225 milliseconds to
800 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.
Response:
<SOH>
0
<CR> Positive response.
Restore Defaults
Syntax:
<SOH>
RD
<CR>
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.
Table 12 lists the factory defaults for the SX112 controller. The Restore Defaults
command is useful in situations where inadvertent commands to the controller have
rendered the sensor inoperative.
