Elo 2218 AccuTouch Controller Elo E329179
Replaces Elo E658721 2216 AccuTouch Controller
Elo 2218 vs 2216 Comparison Chart
Supply Voltage and Current
- +5 VDC, nominal (+4.50 VDC to +5.25 VDC). Self powered only.
- 25 mA standby minimum, typical at +5 VDC; during touch 110 mA typical
- Average power dissipation is 0.56 W, typical
Interface-Serial
- EIA 232E (Serial RS-232), DCE configuration. 8 Data Bits, 1 Stop Bit, No Parity, Full Duplex
- Hardware handshaking: RTS/CTS
- DSR is pulled HIGH (>+3V) by the 2218 when connected and powered. DTR can be asserted by the host to interrupt the flow of data from the controller.
- Note that if the application does not monitor CTS, then an interval of approximately 5 seconds should be inserted between the issuance of a reset command and any other command.
Communication Parameters
- Baud Rate 9600 (default), and 19200
- 8 Data bits, 1 stop bit, no parity only
Interface-USB
- The 2218 is a full-speed USB device. If the USB is connected to the controller, the controller will communicate over the USB, and will not communicate over the serial port.
- The 2218 is never powered from the USB – it is self-powered only.
Operating Modes
- Full AccuTouch SmartSet protocol. Emulation of E281A-4002 protocol can be selected by SmartSet command.
- Initial/ Stream/ Untouch/ Z-axis Enable Modes
Touch Resolution
Conversion Time
- Approximately 5.5 ms per coordinate set
LED Diagnostic Characteristics
A green LED indicates controller status as below:
| LED Blink Rate |
Function |
| Once per second |
Normal condition, untouched state |
| On continuously |
Touched state |
| Twice per second |
Error detected |
