M2256PW 3M, M2256PW Datasheet - Page 26

• 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

26
Table 10. Data Stage (controller response)
Set Feature - Reset
Table 11. Reset - Setup Stage
Table 12. Reset – Data Stage
Set Feature –Restore Defaults
Note: The number of actual contacts reported may exceed this number (possibly up to
60).
This is a request to perform a controller reset. Soft resets are automatic after any block
parameter changes.
A Hard Reset will cause the controller to reenumerate.
In the case of a Soft Reset, after sending the 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
“Soft Reset Occurred,” “Command Complete,” or “Fail”. Any timeout for this status
polling should be 2 seconds minimum.
This is a request to restore parameter defaults.
Offset
0
1
Offset
0
1
2
4
6
Offset
0
1
2
3--7
Field
Report ID
Max Count
Field
bmRequestType
bRequest
wValue
wIndex
wLength
Field
Report ID
Report Subtype
bResetType
3M Touch Systems, Inc. Proprietary Information
Size
1
1
Size
1
1
2
2
2
Size
1
1
1
5
0x07
Value
0x12
0x1E
Value
0x21
0x09
0x0303
0
8
Value
0x03
0x01
0x02
0
Indicates a reset request
Description
Feature Report ID
Number of actual 30 fingers
supported
Description
Feature Report ID
Soft Reset
Hard Reset
Not used
Description
Class,H2D,Interface
Set Report
msb=03=Feature
lsb=03= Feature Report ID
Always 0
Always 8
3M™ Display M2256PW User Guide