Specifications

CARROLL TOUCH Chapter 4 - Smart-Frame Protocol
Touch System Programmer’s Guide 4-3
Communication Commands
Communication between the touch system and the host computer can
be regulated by hardware or software flow control. Communication
commands are shown in Table 4-1.
Hardware flow control regulates the transmission of data from the
touch system to the host and from the host to the touch system by using
RS-232 control signals. To enable and disable this type of data flow
control, use the Hardware_Flow_Control_On (41H) and
Hardware_Flow_Control_Off (42H) commands.
Software flow control regulates transmission of data from the touch
system to the host on a report-by-report basis. To implement this type
of data flow control, use the Report_Transfer_On (44H) command,
Report_Transfer_Off (43H) command, or the Get_One_Report (46H)
command.
The default flow control method is software flow control.
Reporting Method Commands
Reporting methods determine the form in which data is sent from the
touch system to the host. Both the desired reporting method and touch
mode should be selected before turning touch system scanning on,
although they may also be changed with scanning on. The commands
used to select the reporting method are shown in Table 4-2.
Table 4-1. SFP Communication Commands
Command Name
Hex
Code
ASCII
Code
Associated
Report
Hardware_Flow_Control_On 41H A None
Hardware_Flow_Control_Off 42H B None
Report_Transfer_Off 43H C None
Report_Transfer_On 44H D None
Get_One_Report 46H F varies