C2254PW 3M, C2254PW Datasheet - Page 38

• Manufacturer Part Number: C2254PW
• Description: LCD Touch Panels 22 C2254PW 10 Point Multi-Touch
• Manufacturer: 3M
• Series: -r
• Type: Capacitiver

Specifications of C2254PW

• Length: 18.6" (473.8mm)
• Width: 19.7" (500mm)
• Height: 11.6" (296.1mm)
• Interface: USB/Serial
• Diagonal Screen Size: 22" (559mm)
• Lead Free Status / Rohs Status: Details

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Firmware Commands
Calibrate
Syntax:
Response:
Developers may use this information when writing touch applications, developing custom
drivers or touch configurations, or testing their touch systems. Developers can use
firmware commands to initialize the controller, select operating modes, specify data
formats, and execute diagnostic functions.
Caution: This document assumes you are familiar with firmware commands and how to
use them. Executing some commands may alter the performance of your touch system
and render it inoperable. You should be aware of the results before executing any
firmware commands.
To optimize the performance of the touch controller and simplify the development of
custom drivers, 3M Touch Systems recommends you use the commands listed in Table
17 for current development. Using these commands ensures compatibility with all 3M™
controllers.
Note: When you enter commands in terminal mode, precede each command with
<CTRL> A to enter the start of header.
Table 18. Firmware Commands for PX Serial Controller Development
<SOH>CX<CR>
<SOH>1<CR> Valid point response.
A Valid Point Response (‘1’) signifies that a touch coordinate was detected and is in
range of the expected screen target area. Two valid point responses indicate successful
calibration.
Command
Calibrate
Get Copyright
Mode Down Up
Mode Inactive
Mode Stream
Name Command
Null Command
Output Identity
Soft Reset
Restore Defaults
Unit Type
3M Touch Systems, Inc. Proprietary Information -- 37732v04
Code
CX
Q101
MDU
MI
MS
NM
Z
OI
R
RD
UT
Description
Initiates an interactive 2-point calibration.
Returns the copyright string.
Reports touchdowns and liftoffs only.
Turns off touch reports.
Default mode. Streaming touch reports.
Returns a controller identifier string.
Returns an ACK. No effect.
Returns Identity string: ADxxxx
Resets certain modes and gets a new baseline.
Restores default settings.
Returns the Status string: AD****ss.
3M™ Multi-Touch Chassis Display User Guide