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EX II 3000SP Controller Communications 31
3M Touch Systems Proprietary Information
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 10 lists the factory defaults for the EX II 3000SP controller. The
Restore Defaults command is useful in situations where inadvertent
commands to the controller have rendered the touch screen inoperative.
Table 10 EX II 3000SP Factory Default Settings
Operating Parameter Default
Baud Rate 9600
Serial Communication Settings N, 8, 1
Data Format Format Tablet
Operating Mode Mode Stream
Return to Factory Calibration Yes
The Restore Defaults command requires approximately 75 to 100
milliseconds, plus the execution time of the Reset command (225 to 800
milliseconds). Therefore, the application program should wait and be sure it
receives the command response before issuing another command to the
controller.
After you issue a Restore Defaults command, you must recalibrate your
touch screen using a 2-point calibration.
Response: <SOH>0<CR> Positive response