M2256PW 3M, M2256PW Datasheet - Page 24

• Manufacturer Part Number: M2256PW
• Description: LCD Touch Panels 22 M2256PW 20 Point Multi-Touch
• Manufacturer: 3M
• Series: -r
• Type: Capacitiver

Specifications of M2256PW

• Length: 18.6" (473.8mm)
• Width: 20.2" (513.2mm)
• Height: 11.6" (296.1mm)
• Interface: USB/Serial
• Diagonal Screen Size: 22" (559mm)
• Lead Free Status / Rohs Status: Details

24
Get Feature - GetStatus
Table 5. Controller Status Setup Stage
Table 6. Controller Status Data Stage (controller response)
Y = 1049 - (1050 x 1/8) = 1049 - 131 = 918
X = 0 + (1680 x 1/8) = 0 + 210 = 210
Lower Left Calibration Target
The Calibrate Extended command then positions the first calibration target inward from
the lower left corner (0,1049) and the second calibration target inward from the upper
right corner (1679,0). The following illustration shows how the calibration targets are
calculated for a Windows-based system. Your operating system may be different.
The illustration below shows the coordinates of the calibration targets and display
corners. The corners show the video coordinates in parentheses and the touch screen
coordinates in brackets.
This is a request to send information that indicates the status of the controller. Among the
uses for this request are determining whether there were any power on check errors and
determining whether the last request was completed successfully.
Offset
0
1
2
4
6
Offset
0
1
2
3
4
5-7
Field
bmRequestType
bRequest
wValue
wIndex
wLength
Field
Report ID
POC Status
Cmd Status
Touch Status
Async Reports
Not used
(0, 1049) [0, 32767]
(0, 0) [0, 0]
3M Touch Systems, Inc. Proprietary Information
(210, 918)
Size
1
1
2
2
2
Size
1
1
1
1
1
3
Value
0xA1
0x01
0x0306
0
8
Value
0x06
0xXX
0xXX
0
0xXX
0
(1469, 131)
(
1679, 0) [32767, 0]
Description
Class,D2H,Interface
Get Report
msb=03=Feature
lsb=06= Feature Report ID
Always 0
Always 8
Description
Feature Report ID
Power On Check Status
Status of last command
Not used
0x00 = async touch output off
0x01 = async touch output on
Not used
(1679, 1049) [32767, 32767]
3M™ Display M2256PW User Guide
Upper Right Calibration Target
X = 1679 – (1680 x 1/8) = 1679 – 210 = 1469
Y = 0 + (1050 x 1/8) = 0 + 131 = 131