3M Touch Systems Proprietary Information
13
Installing the terminal
RS-422 communication
For RS-422 communications, make a cable using the pin-out in Table B. For
maximum cable length, refer to the EIA RS-422 Specification Standard.
RS-485 communication
For RS-485 communication, make a cable using the pin-out in Table C. For
maximum cable length, refer to the EIA RS-485 Specification Standard.
Connecting a keyboard (optional)
The terminal provides all the functionality you need to use your touch screen
without an input device such as a keyboard.
However, if you want to use a keyboard with the terminal, you can connect a 101-
key Enhanced PC/AT compatible keyboard to the female DIN plug inside the rear
hatch. Use a standard cable, or construct a cable matching the pin-out in Table D.
Table B: COM A RS-422 connector pin-out (full duplex)
Pin Signal Description In/Out
1GND
Shield Ground
1
---
9 TX+ Balanced Transmit data + OUT
10 TX- Balanced Transmit data - OUT
14 RX+ Balanced Receive data + IN
15 RX- Balanced Receive data - IN
1
Connect only one end of the cable to shield ground.
Table C: COM A RS-485 connector pin-out (half duplex)
Pin Signal Description In/Out
1GND
Shield Ground
1
---
9 TX/ RX + Balanced Transmit data +
Connect to pin 14
IN/ OUT
10 TX/ RX - Balanced Transmit data -
Connect to pin 15
IN/ OUT
14 TX/ RX+ Balanced Receive data +
Connect to pin 9
IN/ OUT
15 TX/ RX- Balanced Receive data -
Connect to pin 10
IN/ OUT
1
Connect only one end of the cable to shield ground.
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