Knowledge Base / Legacy Products / Gateways / 7000 Series - AppSrvCE

Why is COM port 1 not available on the AppSrvCE unit?

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The latest AppSrvCE platform, v1.23, includes ELO USB and serialtouch screen drivers.  COM1 is allocated by the touch screen serialdriver, whether or not a serial touch screen is actually present.  As aresult COM1 is not available to any other application.

To disable the ELO touch screen it is necessary to edit the registrykey HKLM/Hardware/Devicemap/Touch/ComPort and change the name to anunused or nonexistent port (e.g., COM7). This will prevent COM1 frombeing used for the touch screen.