Enabling Serial Device-to-host Communications
When you want a bidirectional device on a serial port (such as a printer or bar-code reader) to be able to send information via Reflection, you can enable serial device-to-host communications. Most hosts automatically initiate serial device-to-host communications (via the Csi?9i control function). If you are using a host application that does not, you may also need to manually enable serial device-to-host communications.
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