Specifications

Chapter 4 - Smart-Frame Protocol CARROLL TOUCH
4-6 Touch System Programmer’s Guide
Reports
An SFP report has the following format:
header reportbytes trailer
The trailer is always FF. An example of a report returned from the
Get_Error_Report (32H) command is:
F8 00 FF
F8 is the header, 00 indicates no errors, and FF is the trailer. An
example of a touch coordinate report is:
FE 35 2D FF
FE is the header; 35 and 2D are the x, y touch coordinates; and FF is
the trailer.
Table 4-5. SFP System Commands
Command Name
Hex
Code
ASCII
Code
Associated
Report
Echo_On 20H Space None
Echo_Off 21H ! None
Touch_Scanning_On 2AH * None
Touch_Scanning_Off 2BH + None
Run_Diagnostics 3AH : Error Report
Software_Reset 3CH < None
Clear_Touch_Report_Buffer 3DH = None
Reset 45H E None
SwitchToSFP-II 65H SFP-II Protocol
Version Report or
Error Report