Carrol Touch Modular Flat Panel Specifications download pdf (Page 43)

Chapter 4 - Smart-Frame Protocol CARROLL TOUCH

4-2 Touch System Programmer’s Guide

Overview

The Smart-Frame Protocol (SFP) regulates communication between

the touch system and the application program.

Smart-Frame Protocol commands are used to:

• Initialize the touch system.

• Establish host-to-touch communications.

• Select the touch system reporting and operating modes.

• Request special reports.

• Manage report transfer.

• Execute diagnostic functions.

SFP and SFP-II

The SFP, defined in 1985, is currently used by most Carroll Touch

touch systems, but will eventually be supplanted by Smart-Frame

Protocol II (SFP-II) on newer touch systems.

The SFP is implemented as a modal protocol, meaning that, even if a

touch system supports both the SFP and SFP-II, it can only support one

protocol at a time and, during that time, cannot accept commands from

the other protocol. To switch between protocols, use the

SwitchToSFP-II (65H) SFP command and the SwitchToClassicSFP

(64H) SFP-II function.

Types of SFP Commands

Smart-Frame Protocol commands are grouped into five logical

categories:

• Communication commands.

• Reporting method commands.

• Touch mode commands.

• Information request commands.

• System commands.

SFP commands may be invoked with either a hexadecimal code or an

ASCII code, and many of the commands have associated reports. To

issue a command under the Smart-Frame Protocol, simply type its

function number. An SFP command example is 32, the hexadecimal

code for the Get_Error_Report (32H) command.

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 273 274

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Carrol Touch Modular Flat Panel Specifications Page 43