Specifications

Touch Controllers Reference Guide70
The Parameter Set command is issued with the new parameters to
the controller. The new settings take effect immediately.
The host system must be changed to the new parameters in order
to communicate with the controller again.
Examples: <Ctrl A>PN813<CR> Sets the serial line to no parity, eight
data bits, one stop bit, and 4800 baud.
<Ctrl A>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.
For example, using PROCOMM, you enter <Ctrl A>PN815<CR> to
set the communication rate to 1200. However, PROCOMM does not
support 1200 baud. The controller will now pass data at 1200 baud,
but the host system will not be able to read the data. The controller
will expect to receive all commands at 1200 baud and will not
recognize any attempts to change the communication rate. The
controller is effectively locked up. If AutoBaud is enabled, you can
correct this situation by a power-down/power-up sequence. If
AutoBaud is disabled, you need to use Microcal or another terminal
application to set the communication rate at the new values.
The communication rates that can be set with the AutoBaud command
are the same as the rates you can set with the Parameter Set command.
Therefore, the AutoBaud command no longer finds 7200, 3600, 2000,
1800, 600, 300, 200, 150, 135, and 110 baud. Also, some
MicroTouch controllers do not support the AutoBaud command.
Response: <SOH>0<CR> Positive response.