3M™ MicroTouch™ Controller EX Dual Mode Reference Guide
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3M Touch Systems, Inc. Proprietary Information – TSD-40848A
To integrate and test the EX dual mode controller, you need the following items:
•
A 3M™ MicroTouch™ surface capacitive sensor. These sensors are available in a
variety of sizes.
•
A method of establishing the serial data communication between the controller and
your system. The standard 3M™ MicroTouch™ RS-232 serial cable (P/N 7310101)
or USB communications cable (P/N 7319420) is recommended.
•
A method of supplying power to the controller -- either internal or external.
•
A touch driver with a calibration routine. You can use 3M™ MicroTouch™ MT 7
software which includes the necessary touch driver and utilities software.
Handling and ESD Protection
When mounting the sensor and controller, use normal precautions for handling
electrostatic sensitive devices. The EX dual mode controllers have internal protection to
±27kV for ESD discharges to the sensor (not to the controller directly) that may occur
during normal operation of the sensor. Refer to the appendix for further specifications.
EX Dual Mode Controller Communication Connections
The EX USB controller requires a 3M™ MicroTouch™ USB communication cable (P/N
7319420) or an equivalent interconnect. One end of this cable plugs into the USB
connector (JP4) on the EX USB controller. The other end plugs into a USB port on your
PC with a Type-A connector. Table 1 describes the interconnections of the 3M™
MicroTouch™ USB cable.
Table 1. USB Cable for EX USB Mode
PC Side (USB Type A)
Wire
Controller Side (5-Pin Molex)
Pin
USB Assigned
Color
Pin
Description
1
+5VDC
Red
1
+5VDC input power
2
Data (DN)
Gray
2
Data (DN) differential pair
3
Data (DP)
Green
3
Data (DP) differential pair
4 0V
Black
4 Power
return
5
Cable Shield Shell Charcoal
Gray
5
Outer cable shield around signal and
power lines. Chassis (earth) ground
If you choose serial communications, you will need a method of establishing the serial
data communication between the controller and your system. You can build your own or
purchase the standard 3M™ MicroTouch™ RS-232 serial cable (P/N 7310101). The
following table describes the pins for this cable, which connects to a serial
communication (COM) port on the PC.
