EXII-7719UC 3M, EXII-7719UC Datasheet - Page 13

• Manufacturer Part Number: EXII-7719UC
• Description: CONTROLLER EXII USB 1X2 CAPAC
• Manufacturer: 3M
• Series: MicroTouch™ Controller EXr

Specifications of EXII-7719UC

• Accessory Type: Touch Screen - Controller
• Operating Supply Voltage: 5 VDC
• Resolution: 16 K x 16 K
• For Use With/related Products: ClearTek™ Touch Screens
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 3M5766; 98-0003-1996-6

3M™ MicroTouch™ Controller EX USB Reference Guide
Self Test
Condition
RAM Data
Error
RAM Code
Error
STRAY Error
NOV Error
HDW Error
Reserved
CABLE Error
NOV2 Error
Reserved
EEPROM
Error
NOV5 Error
NOV6 Error
NOV7 Error
Reserved
2
2
2
3
1
1
The LED indicator also provides visual indication of the controller’s internal self-tests by
flashing or blinking a code that may be interpreted using the table below. The test results
are also returned as part of the USB Status report. Those bits that result in a flashing error
code are repeated in the table below.
Some errors are fatal -- that is, normal sensor operation cannot occur. Others errors may
simply cause “default conditions” to be assumed and sensor operation may proceed. An
example of a non-fatal error is when default operating conditions are restored due to an
incorrect NOVRAM checksum: in this case, operation continues using factory default
conditions (as if a Restore Defaults Request had been issued).
Table 4. LED Diagnostic Codes for EX USB Controllers
LED
Flashes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
3M Touch Systems, Inc. Proprietary Information
Self
Test
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Description
Data side checksum error
Firmware EEPROM
checksum verification error
Unable to initialize stray
cancellation
Parameters invalid (using
defaults)
Controller hardware failure
(phase/gain initialization)
Reserved
Cable NOVRAM
linearization data invalid
Controller NOVRAM
linearization data invalid
Reserved
EEPROM is not working
Controller ID is not valid
Interface configuration
values are not valid
Touch configuration values
are not valid
Reserved
What to do...
Reload program code.
Reload program code.
Replace controller. If error
reoccurs, might be a sensor
problem.
Restore defaults. If fault persists,
replace controller. If error reoccurs,
might be a sensor or cable
problem.
Cycle power. If fault persists,
replace controller.
At startup, the cable NOVRAM
error will flash the LED until the
controller receives a status
command from host.
Replace sensor or perform a 25-
point linearization. Contact
Technical Support.
Reload program code.
Restore defaults. If fault persists,
replace controller.
Restore defaults. If fault persists,
replace controller.
Restore defaults. If fault persists,
replace controller.
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