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22
Offset
5
7
9
11
POC Status – The status of the Power On Checks. Various controller systems are
checked at power-up. If any failures in these systems are detected, a POC flag is set. The
POC status field reports the state of these flags. The POC status information is also
flashed on the controller's LED. The number of flashes generated for a given error is one
more than the error's bit number. Refer to the following table for further details. This is a
2-byte bitmapped field.
Cmd Status – The status for the last command request. This field is used to determine
whether the last request was processed successfully. It is also used to track the progress
of a multi-stage request, such as 2-point calibration. The Status Request does not affect
the contents of this field, i.e., successful or unsuccessful processing of a previous status
request does not cause the command status field to be updated.
Table 11. Valid Command Status Field Entries
Response
0
1
2
3
4
5
Touch Status – Status information for the most recent touch coordinate.
Table 12. Touch Status
Bit Number
0
1 - 7
Async reports – the only active asynchronous report is the Touch Coordinate report 1.
Extended POC Status – This is additional power on status information. This is a 2-byte
bitmapped field.
Table 13. Extended POC Status
Bit Number
0
1
2 - 15
Field
Size
Asynch Reports
2
Reserved
2
Extended POC
2
Status
Reserved
9
Description
Failure in command processing
Command being processed
Stage 1 processing complete (for multi-stage commands)
Command complete
Soft reset occurred
Hard reset occurred
Description
1 if the sensor is being touched
Reserved
Description
Corner drive offset level is too high
Fixed 2-point calibration error high
Reserved
3M Touch Systems, Inc. Proprietary Information – TSD-40848A
3M™ MicroTouch™ Controller EX Dual Mode Reference Guide
Value
Description
0xXXXX
Active asynchronous reports
0xXXXX
Reserved
0xXXXX
Additional Power On Check
Status
9 bytes
Reserved
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