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3M SC400 Serial Resistive Reference Manual

Summary of SC400 Serial Resistive

  • Page 1

    3m touch systems, inc. Proprietary information 3m ™ microtouch ™ controller rx142 reference guide formerly sc400 serial resistive read and understand all safety information contained in this document before using this product. 3.

  • Page 2

    2 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information the information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, wi...

  • Page 3: Contents

    3m™ microtouch™ controller rx142 reference guide 3 3m touch systems, inc. Proprietary information contents introduction what you need to know ............................................................................................5 important safety information.......................................

  • Page 4

    4 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information restore defaults ........................................................................................................24 set controller number .............................................. Error! Bo...

  • Page 5: Introduction

    3m™ microtouch™ controller rx142 reference guide 5 3m touch systems, inc. Proprietary information introduction 3m touch systems offers several advanced controllers designed for reliability and easy installation. Each controller provides superior performance and delivers excellent stability, sensitiv...

  • Page 6

    6 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information explanation of signal word consequences warning: indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury and/or property damage. Caution: indicates a ...

  • Page 7

    3m™ microtouch™ controller rx142 reference guide 7 3m touch systems, inc. Proprietary information whenever you contact technical support, please provide the following information: • display size, part number and serial number • current driver version • operating system used • information on addition...

  • Page 9

    3m™ microtouch™ controller rx142 reference guide 9 3m touch systems, inc. Proprietary information chapter 1 integrating the rx142 controller the 3m tm microtouch™ rx142 serial resistive controller is an accurate, small outline, low cost, temperature stable controller capable of supporting a wide ran...

  • Page 10

    10 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information figure 1. Rx142 overall dimensions handling and esd protection when mounting the sensor and controller, use normal precautions for handling electrostatic sensitive devices. The rx142 has internal prote...

  • Page 11

    3m™ microtouch™ controller rx142 reference guide 11 3m touch systems, inc. Proprietary information pc side (9-pin d) controller side (8-pin molex) pin rs-232 assigned jumpered to: pin description 7 request to send (rts) 1 request to send (rts) 8 clear to send (cts) 4 clear to send (cts) 9 not used d...

  • Page 12

    12 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information caution to avoid possible damage to the controller, you must provide a path for electrostatic discharge (esd). The controller mounting hole near the sensor connector should be used to connect to chassi...

  • Page 13

    3m™ microtouch™ controller rx142 reference guide 13 3m touch systems, inc. Proprietary information 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 expect...

  • Page 14

    14 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information installing 3m™ microtouch™ software 3m™ microtouch™ software includes the driver that enables your sensor to work with your computer. 3m touch systems has touch drivers for many operating systems, incl...

  • Page 15

    3m™ microtouch™ controller rx142 reference guide 15 3m touch systems, inc. Proprietary information chapter 2 rx142 controller communications this chapter discusses the fundamentals of communicating with the rx142 controller. The firmware commands, which are usually issued by a driver or utility prog...

  • Page 16

    16 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information operating mode the operating mode specifies the conditions under which the controller sends the x/y touch coordinates (input data packet) to the host system. Mode stream is the operating mode for the r...

  • Page 17

    3m™ microtouch™ controller rx142 reference guide 17 3m touch systems, inc. Proprietary information the terminator is the last character of each command string and is an ascii carriage return cr. An ascii cr control character is 0d hexadecimal. To enter a carriage return ending the command sequence, ...

  • Page 18

    18 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information in this chapter, responses are shown as a string of ascii characters consisting of a header, the response, and a terminator as follows: response controller initialization to initialize the rx142 contro...

  • Page 19

    3m™ microtouch™ controller rx142 reference guide 19 3m touch systems, inc. Proprietary information table 3 firmware commands for rx142 development command code description calibrate 3 point c3 initiates a 3-point calibration routine. Enter sleep es controller enters low power mode. Format tablet ft ...

  • Page 20

    20 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information in addition to scaling the format tablet output to the display, this command corrects for sensor orientation and sensor pinout variations. This information will be maintained by the controller. The cal...

  • Page 21

    3m™ microtouch™ controller rx142 reference guide 21 3m touch systems, inc. Proprietary information figure 2 calibration target locations enter sleep syntax: es response: 0 positive response. Description: this command is a power management feature that lets you put the controller into a low power mod...

  • Page 22

    22 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information the low order bits (x3 – x0 and y3 – y0) are not significant in a 1024 by 1024 sensor because data can fluctuate with each touch, and therefore may not be completely accurate. Table 4 data sequence msb...

  • Page 23

    3m™ microtouch™ controller rx142 reference guide 23 3m touch systems, inc. Proprietary information the format of the coordinate data depends on the last format command received by the controller. Null command syntax: z response: 0 positive response. Description: queries the controller and waits for ...

  • Page 24

    24 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information restore defaults syntax: rd response: 0 positive response. Description: returns to the factory default operating parameters. The restore defaults command copies the 3m touch systems factory default par...

  • Page 25

    3m™ microtouch™ controller rx142 reference guide 25 3m touch systems, inc. Proprietary information tt = two ascii characters that identify the controller type. Sc indicates the rx142 series of controllers ffff = four ascii characters that indicate the features supported by the controller. R indicate...

  • Page 27

    3m™ microtouch™ controller rx142 reference guide 27 3m touch systems, inc. Proprietary information appendix a rx142 controller specifications this section provides controller specifications such as power requirements, environmental requirements, and cable connectors. The rx142 controller is a compac...

  • Page 28

    28 3m™ microtouch™ controller rx142 reference guide 3m touch systems, inc. Proprietary information technical specifications physical dimensions 2.74 in. X 1.49 in. X 0.45 in. (69.6 mm x 37.8 mm x 11.4 mm) board level functions power 5 vdc (16 ma typical, 27 ma with touch); ± 5% regulation 12 vdc (19...

  • Page 29

    3m™ microtouch™ controller rx142 reference guide 29 3m touch systems, inc. Proprietary information performance & reliability minimum touch duration 14 ± 1 msec touch resolution – 1024 x 1024 (maximum number of addressable coordinates generated by the controller) esd susceptibility ±8 kv contact disc...