C2254PW 3M, C2254PW Datasheet - Page 32

• 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

32
Table 14. Restore Defaults - Data Stage
Asynchronous Reports
Table 15. Coordinate Data Report 0x13 --Data Stage
After sending this command, the controller will acknowledge (ACK) the transfer, but the
command will not yet be completed. Before sending any other commands, the host
should poll with GetStatus until the command status field returns “Command Complete”
or “Fail”. Any timeout for this status polling should be 2 seconds minimum.
Coordinate Data – MultiTouch Digitizer mode Async Report 0x13
This is used to transfer the coordinate data to the host. This report, when activated, is
sent to the host whenever new data is available or scheduled for transmission. It is an
asynchronous report that is activated by default at power up.
The report shown supports up to 6 simultaneous touches. Note that if more than 6
touches were to be supported, Report 0x13 would be sent as many times as necessary to
accommodate the number of fingers touching. Only the first Report 0x13 will have a non-
zero actual count. Each valid touch is marked with an ID number that remains the same
from touchdown through liftoff. The ID number can be any value from 0 to 255. Ignore
all other data within a touch report structure with a status marked “not valid”.
The coordinate system is Upper Left origin.
Offset
0
1
2-7
Offset
0
1
11
21
31
41
51
61
62
63
Field
Report ID
Report Subtype
Field
Report ID
Touch Report
Touch Report
Touch Report
Touch Report
Touch Report
Touch Report
Actual Count
Not used
Not used
3M Touch Systems, Inc. Proprietary Information -- 37732v04
Size
1
10
10
10
10
10
10
1
1
1
Size
1
1
6
See table 16
See table 16
See table 16
See table 16
See table 16
See table 16
Value
0x13
1 to 60
0
0
0x08
Value
0x03
0
3M™ Multi-Touch Chassis Display User Guide
Description
Feature Report ID
Restore Defaults
Not used
Description
Report ID
Touch Report Structure
Touch Report Structure
Touch Report Structure
Touch Report Structure
Touch Report Structure
Touch Report Structure
Number of valid touch reports