3M™ MicroTouch™ Controller RX142 Reference Guide

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3M Touch Systems, Inc. Proprietary Information

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

Condition

Self Test

Bit

Description

What to do…

1

Reserved.

0

Reserved

2

ROM Error

1

Firmware EPROM

checksum

verification error

No recovery. Replace

the controller.

3

Reserved.

2

Reserved

4

Block 1

checksum

Error

3

Operating

parameters invalid

(using defaults).

Cycle power off and on.

5

Hardware

error

4

Power up sensor

connector voltages

out of range

Check connections to

sensor

6

Reserved.

5

Reserved

7

Reserved.

6

Reserved

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.