Elo Touch Solutions

E281-4002 IntelliTouch Serial Controller

E281-4002 IntelliTouch Serial Controller

Connector To
P1 Touchscreen Cable
P2 RS-232 Serial Communication
P3 Power Supply


P2 Connections Serial Communication Connections
DB9 DB 25
3 Transmit Data (TxD) 1 3 2
5 Receive Data (RxD) 2 3
9 Clear To Send (CTS) 8 5
11 Data Set Ready (DSR) 6 6
13 Ground (GND) 1 5 7

1 The controller only requires TxD and GND. Implementation of the other signals will allow two way communication between the E281-4002 and the host computer.

Dip Switch Settings

SW0: Data Type

  • OFF: Stream *
  • ON: Single Point

SW1: Communications

  • OFF: Binary *
  • ON: ASCII

SW2: Z-Axis

  • OFF: Disabled
  • ON: Enabled *
Baud Rate SW3 SW4 SW5
9600 ON ON ON
4800 ON ON OFF
2400 ON OFF ON
1200 ON OFF OFF
600 OFF ON ON
300 OFF ON OFF
150 OFF OFF ON
9600 OFF OFF OFF

SW6

  • ON: Reserved

SW7

  • ON: Reserved

P4 Connections

Pin Signal
1 -12 VDC, 0.5 A
2 GND (Analog) 1
3 +12 VDC, 0.12 A
4 GND (Digital) 1
5 +5 VDC, 0.05 A
6 Key

1 For proper operation, pins 2 and 4 must both be grounded.