User`s guide

TouchWare for Windows NT User's Guide40
Setting the Baud Rate
Use the Baud Rate setting to specify the rate for the COM port
through which the touchscreen driver communicates with the
touchscreen controller and touchscreen.
Note:
The touchscreen controller must be set to use the same baud
rate as the COM port. If the baud rates are different, the touchscreen
driver and the touchscreen controller cannot communicate. To change
the baud rate for the controller, use Microcal. The default baud rate
for all MicroTouch controllers is 9600.
For more information about using Microcal, refer to Chapter 4.
Saving and Activating Your Hardware Control Changes
To save your changes, choose OK. When you select OK, the
Touchscreen Control program updates the hardware values in the
system registry. When you restart Windows NT, the values defined in
the system registry are used for communication between the
touchscreen driver and the touchscreen controller.
Hardware changes do not take effect until you restart Windows NT.
Reinitializing the Touchscreen Controller
When you start your system, the system attempts to initialize the
touchscreen controller. In the initialization process, the touchscreen
driver tries to establish communication with the touchscreen
controller. When the two are communicating, the touchscreen driver
sends a series of firmware commands to the controller. These
commands set a variety of communication parameters, such as parity,
stop bits, and data bits.
For more information about the firmware commands, refer to the
Touch Controllers Reference Guide.