3M™ MicroTouch™ Controller EX Dual Mode Reference Guide
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3M Touch Systems, Inc. Proprietary Information – TSD-40848A
<SOH>PN81<CR>
Sets the parity, data bits, and stop bits; leaves the baud at its
previous value.
Caution:
The settings are immediately written to NOVRAM, and all future
communication must occur at the new values. It is possible to set the parameters to values
that prevent future communication with the controller.
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.
The following table lists the factory defaults for the EX serial controller. The Restore
Defaults command is useful in situations where inadvertent commands to the controller
have rendered the sensor inoperative.
