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3M™ MicroTouch™ Controller RX142 Reference Guide
1.
Y-
2.
X+
3.
Y+
4.
X-
Status Light (LED) Diagnostics
3M Touch Systems controllers are highly reliable units; however, there may be occasions
when the controller does not perform exactly as you expected. The RX142 controller
provides diagnostic feedback with a light emitting diode (LED) on the component side of
the board that indicates the status of the sensor unit. During normal operation, when you
touch the sensor the LED becomes bright as long as the controller detects a touch. A
flashing (or blinking) LED during power-up indicates the controller's power-on self-test
failed. Refer to the following table for a description of each error code.
Table 2 LED Diagnostic Codes for RX142 Controllers
Flashes Self Test
1
2
3
4
5
6
7
Turning On Your System
Before you turn on your custom system, ensure that all cables are connected properly and
that the controller is properly mounted. Be sure to tighten all cable connector screws.
To start up your system
1. Turn on your monitor and computer.
2. Adjust the contrast and brightness to suit your personal preference and working
environment.
3. Adjust the horizontal and vertical position controls on the monitor to center the image
on the sensor.
Self Test
Condition
Bit
Reserved.
0
ROM Error
1
Reserved.
2
Block 1
3
checksum
Error
Hardware
4
error
Reserved.
5
Reserved.
6
3M Touch Systems, Inc. Proprietary Information
Description
What to do...
Reserved
Firmware EPROM
No recovery. Replace
checksum
the controller.
verification error
Reserved
Operating
Cycle power off and on.
parameters invalid
(using defaults).
Power up sensor
Check connections to
connector voltages
sensor
out of range
Reserved
Reserved
13
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