RadiMation Error: 805306668

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RS232: Invalid Communication Handle[edit]

While a RS232 port was accessed an invalid handle was or is used. This could indicate that a port is trying to be opened which is not present (any more).

Solution[edit]

  • Ensure that no other program is using the same COM port
  • For USB <=> RS232 devices: Ensure that the device is connected to an USB port, and that the device is powered on.

A serial communication system, often used to control small equipment connected to a PC.

Universal Serial Bus: A modern serially controlled communication system, found on all new PC's

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