User`s guide

30 Appendix A - Configuring Your Controller
AccuTouch Serial Controller (E271-140)
Verify the controller’s switch settings are as follows:
Baud Rate
9600 SW1 - OFF SW2 - OFF
4800 SW1 - ON SW2 - OFF
2400 (recommended) SW1 - OFF SW2 - ON
300 SW1 - ON SW2 - ON
8-Bit Data SW3 - OFF
Binary Mode SW4 - ON
Filtered Mode SW5 - ON
Stream Mode SW6 - OFF
2400 baud is recommended to limit the excessive amounts of data at higher baud
rates.
Next, verify the Touchscreen Type jumpers. The controller is shipped with a
jumper installed on the pins marked W1. This is the correct setting for E274 5-wire
touchscreens. If you are using an older E270 3-wire touchscreen, install the jumper
on W2 instead.