3M Systems EX II 3700SP User Manual

Page 17

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3M™ MicroTouch™ Controller SX112 Reference Guide

17

3M Touch Systems, Inc. Proprietary Information

To optimize the performance of the touch controller and simplify the development of
custom drivers, 3M Touch Systems recommends you use the commands listed in Table 5
for current development. Using these commands ensures compatibility with all 3M™
MicroTouch™ controllers.

Note:

When you enter commands in terminal mode, precede each command with

<CTRL> A to enter the start of header.

Table 5 Firmware Commands for SX112 Controller Development

Command Code

Description

Calibrate
Extended

CX

Initiates an interactive 2-point calibration.

Calibrate
Raw

CR

Collects the raw X and Y coordinates before normal scaling,
linearization, and filtering process.

Diagnostic
Command

DC

Requests that the controller check for sensor failures such as
broken corners, broken wires, etc.

Finger Only FO

The controller disables the pen and only recognizes finger
touch on the sensor.

Format Raw FR

Returns the signal level (amount of touch) of each of the
four sensor corners in digital format.

Format
Tablet

FT

Outputs the X/Y touch coordinate data in a five-byte packet.
Preferred for current development.

Mode
Stream

MS

Sends a continuous stream of X/Y coordinate data when you
touch the sensor.

Name

NM

Returns a controller identifier string.

Null
Command

Z

Queries the controller and waits for a response.

Output
Identity

OI

Identifies the controller type and the firmware version.

Parameter
Set

Ppds[b]

Lets you adjust the communication parameters (parity, data
bits, and stop bits) of the controller.

Pen or Finger PF

The controller recognizes both pen and finger touch. This is
the default setting.

Pen Only

PO

The controller is set to only recognize input from the pen
and ignores any finger contact on the touch sensor.

Reset

R

Initializes the hardware and the firmware, causes the
controller to stop sending data, and recalculates the
environmental conditions.

Restore
Defaults

RD

Returns the controller to the factory default operating
parameters. Note: the serial port is reset to N81 format tablet
and 2-point calibration is lost.

Unit Type

UT

Identifies the touch controller on your system.

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