10
3M™ MicroTouch™ Controller EX Dual Mode Reference Guide
3M Touch Systems, Inc. Proprietary Information – TSD-40848A
Table 2. COM Connections for EX Serial Mode
9-pin D 7-pin Molex Wire Color Description
1
No
connection
———
Data Carrier Detect (DCD).
Connected to DTR and DSR.
2
2
Brown
Transmit Data (TXD). Pin 2 is the controller’s
output to the host.
3
3
Red
Receive Data (RXD). Pin 3 is the controller’s
receive from the host.
4
No
connection
———
Data Terminal Ready (DTR).
Connected to DSR and DCD.
5
5
Blue
Power supply ground.
6
No
connection
———
Data Set Ready (DSR).
Connected to DTR and DCD.
7
1
Black
Request To Send (RTS).
Connected to CTS.
8
4
Green
Clear To Send (CTS).
Connected to RTS.
9
Not used
Sleeve
6
White
DC power jack (+5 VDC).
Pin
7
Shield
Cable shield connected to ground
DC power jack (ground)
Shell
7
———
Chassis (earth) ground.
EX113 Sensor Cable Connections
The sensor cable has a 5-pin single row locking female connector that plugs into the
controller. The following table describes the pins on this connector.
Table 3. Sensor Flex Tail Connector for EX113 dual-mode controllers
Pin Description
1
Upper left (UL) corner
2
Upper right (UR) corner
3
Connects to the flex tail shield, which must
not
be grounded because the EX113
drives the flex tail shield with an AC waveform.
4
Lower right (LR) corner
5
Lower left (LL) corner
Mounting the Controller
The controller is mounted internally. Choose a convenient spot away from high-voltage,
high power cables and electronics. Use 4-40 metal screws to mount the controller.
The controller should be mounted in line with the sensor flex tail exit point to minimize
flexing. Refer to Figure 1 for more details on controller mounting.
