AccuTouch Product Guide - Elo TouchSystems

Serial Controller
The E271-2210 controller is shipped jumpered for 9600 baud, 8 data bits, 1 stop
bit, and no parity. See Appendix B for controller jumper settings.
Using the COMDUMP Utility
COMDUMP is a DOS utility included with most Elo driver software. It is also
available by downloading the file DIAGS.ZIP at www.elotouch.com/Support/
dnld.asp#dos. Use COMDUMP to verify basic controller functionality and to
determine whether or not data is reaching the serial port. COMDUMP can be
run without a touchscreen driver loaded. Type "COMDUMP " where is
the number of the COM port. Detailed instructions can be found at
www.elotouch.com/Support/webtech/eftcomdump.asp. (If you have the
ELODEV driver loaded, also see “Using the TOUCHES Utility” on page A-71.)
If you are not running under DOS, boot your PC from a DOS diskette before
running COMDUMP. If you cannot run DOS, use an ASCII terminal or a
communications program in local mode to get the same type of analysis
provided by COMDUMP. Another option is to temporarily connect the
touchscreen to a PC with DOS and run COMDUMP.
If the hardware is functioning properly, untranslated (raw) coordinates will be
returned at a constant rate only when the touchscreen is touched. If no data is
transmitted on touch, or if data is transmitted when the touchscreen is not
touched (either continuously or intermittently), you have a hardware problem.
If the LED is accessible, and it indicates that data is being transmitted, confirm
the communication parameters, then try another serial port, possibly on another
computer. Also see “RS-232 Connections” on page A-71.
A-69