Specifications

CARROLL TOUCH Appendix A - Smart-Frame Protocol Command Reference

Touch System Programmer’s Guide A-27

Hardware_Flow_Control_Off (42H) (B)

Command Description

When the host sends the Hardware_Flow_Control_Off (42H)

command, the touch system stops using hardware handshaking to

regulate serial communication with the host.

Data Terminal Ready (DTR) is ignored by the touch system, and

Smart-Frame Protocol reports are always transmitted.

For touch systems that use the modular RS-232 controller, Clear To

Send (CTS) is always asserted, indicating that the touch system is ready

to receive commands (even when it is not).

For Smart-Frame type touch systems, CTS follows the state of Request

To Send (RTS) signal from the host and is asserted if RTS is asserted

and deasserted if RTS is deasserted.