Serial Port Diagnostics

The Serial Port Diagnostics page displays information on the current state of a serial port on your Digi device.

• Configuration: The Configuration page displays the electrical interface (Port Type) and basic serial settings.

• Signals: The Signals pane shows the state of serial port signals. The serial port signals are green when asserted (on) and gray when not asserted (off). These signals are defined as follows:

  • RTS: Request To Send.

  • CTS: Clear To Send.

  • DTR: Data Terminal Ready.

  • DSR: Data Set Ready.

  • DCD: Data Carrier Detected.

  • OFC: Output Flow Control. Indicates that flow control is enabled on the remote side of the serial-port connection, and that the Digi device should stop sending data.
  • IFC: Input Flow Control. Indicates that the Digi device is operating as if flow control is enabled for incoming data sent from the remote side of the serial-port connection. This signal is more of an indication that flow control is intended or expected rather than true state information. If the remote side has a flow-control mechanism enabled, the Digi device will use it.

• Serial Statistics: The Statistics section includes data counters and error tracking that will help determine the quality of data that is being sent or received. If the error counters are accumulating, you may have a problem with your Digi device server.

  • Total Data In: Total number of data bytes received.

  • Total Data Out: Total number of data bytes transmitted.

  • Overrun Errors: Number of overrun errors—the next data character arrived before the hardware could move the previous character.

  • Framing Errors: Number of framing errors received—the received data did not have a valid stop bit.

  • Parity Errors: Number of parity errors—the received data did not have the correct parity setting.

  • Breaks: Number of break signals received.