Specifications

Chapter 2 Firmware Commands 31
Response:
<SOH>1<CR>
Positive response. Indicates that the controller
received a valid touch coordinate (point) when
the target was touched. Two valid touch points
indicate a successful calibration.
<SOH>0<CR>
Negative response. Indicates that the touch
point is out of range of the expected target area.
If you receive a negative response, try touching
the target area again.
<SOH>2<CR>
or (No Response)
Indicates that the user did not touch the target
long enough to provide an accurate calibration
point. Only the following controllers return a 2
for this condition: Serial/SMT3, Serial/SMT3R,
TouchPen 4, TouchPen 4+, and MousePort.
All other controllers return no response.