Status Light (Led) Diagnostics - 3M MicroTouch EX113 Reference Manual

3M™ MicroTouch™ Controller EX Dual Mode Reference Guide

Status Light (LED) Diagnostics

3M™ MicroTouch™ controllers are highly reliable units; however, there may be
occasions when the controller does not perform exactly as you expected. The EX dual
mode controller provides diagnostic feedback with a light emitting diode (LED) on the
component side of the board that indicates the status of the touch system.
When you power-up the unit, the LED is bright until the controller start-up sequence is
completed. Following start-up, the LED becomes dim and remains dim as long as you do
not touch the sensor. When you touch the sensor, the LED becomes bright as long as a
touch is detected.
A flashing (or blinking) LED during power-up indicates the controller's power-on
self-test failed. Refer to Table 4 for a description of each error code.
Table 4. LED Diagnostic Codes for the Dual-Mode Controller
Self Test LED
Condition Flashes
RAM Data 1
2
Error
RAM Code 2
2
Error
1
STRAY Error 3
3
NOV Error 4
1
HDW Error 5
Reserved 6
Reserved 7
NOV2 Error 8
Reserved 9
EEPROM 10
2
Error
NOV5 Error 11
NOV6 Error 12
NOV7 Error 13
Reserved 14
Resistance 15
Error
Self
Test
Bit Description
0 Data side checksum error
1 Firmware EEPROM
checksum verification error
2 Unable to initialize stray
cancellation
3 Parameters invalid (using
defaults)
4 Controller hardware failure
(phase/gain initialization)
5 Reserved
6 Reserved
7 Controller NOVRAM
linearization data invalid
8 Reserved
9 EEPROM is not working
10 Controller ID is not valid
11 Interface configuration
values are not valid
12 Touch configuration values
are not valid
13 Reserved
14 Sensor resistance is out of
supported range
3M Touch Systems, Inc. Proprietary Information – TSD-40848A
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.
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.
Cycle power. If fault persists,
replace sensor.
13