Controller - 2216 Accutouch Resistive Controller, E658721

    Controller - 2216 Accutouch Resistive Controller, E658721

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    Elo AccuTouch Products 

    Elo 2218 AccuTouch Controller E658721

    Previously known as:
    E271-2210, 2210MX, 140, 3000U

    Supply Voltage and Current

    • +5 VDC, nominal (+4.50 VDC to +5.25 VDC). Self powered only.
    • 50 mA standby, typical at +5 VDC; during touch 160 mA average, 240 mA peak
    • Average power dissipation is 0.5 W, typical
    • Supply must be capable of sourcing 400 mA, minimum
    • Total noise and ripple requirement must be less than 100mV (p-p) for frequencies below 1MHz, and less than 50mV (p-p) for frequencies above 1MHz.


    • 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 2216 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


    • The 2216 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 2216 is never powered from the USB û 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

    • 4096x4096, size independent

    Conversion Time

    • Approximately 10 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


    Elo Part Number CTR-221600-AT-RSU-00R   CTR221600ATRSU00R

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    D38640-000 Elo AccuTouch USB Controller Cable, D38640-000 $7.80

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