10
3M™ MicroTouch™ Controller RX182 Reference Guide
3M Touch Systems, Inc. Proprietary Information
Figure 1. RX182 Overall Dimensions
Handling and ESD Protection
When mounting the sensor and controller, use normal precautions for handling
electrostatic sensitive devices. The RX182 has internal protection to ±20 kV for ESD air
discharges to the sensor (not to the controller directly) that may occur during normal
operation of the sensor. Refer to Appendix A for further specifications.
Establishing the Data Connection
The RX182 controller requires an RS-232 serial plug and play communication cable
attached to connector JP2. You can use a standard 3M™ MicroTouch™ RS-232 plug and
play cable (P/N 7319630) or an equivalent interconnect. One end of this cable plugs into
the RS-232 connector (JP2) on the RX182 controller. The other end, which has a 9-pin D
connector, plugs directly into a serial COM port on your PC. The 9-pin D connector also
has an input in the connector body for an external 5V power supply. Table 1 describes the
interconnections for the RS-232 cable.
Table 1 COM Cable for RX182 Controller
PC Side (9-Pin D)
Controller Side (8-Pin Molex)
Pin
RS-232 Assigned
Jumpered to:
Pin Description
1
Data Carrier Detect (DCD)
4 and 6 DTR and DSR 8
DCD, DTR, DSR
2
Receive Data (RXD)
2
Transmit Data (TXD)
3
Transmit Data (TXD)
3
Receive Data (RXD)
4
Data Terminal Ready (DTR) 1 and 6 DCD and DSR 8
DCD, DTR, DSR
5
Signal Ground
5
Power supply ground
