How to Send a Text File on the Kermit Protocol with a Serial Port

Written by dave wilson
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How to Send a Text File on the Kermit Protocol with a Serial Port
Transfer files over serial communication ports from Windows (computer ports image by Alexey Stiop from

Serial communications are still widely supported and in many cases required by devices such as networking equipment, modems, point of sale systems and electronic appliances. When devices that use serial communications require system updates or configuration file changes, sending text or binary files over the serial communication line may be required. Use the Kermit protocol within a terminal console program to transfer files to a device over a serial communications connection from a Windows computer.

Skill level:

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Things you need

  • Microsoft Windows 7 computer with a serial port and the HyperTerminal program installed
  • Serial console cable
  • Serial communication parameters for the device to which a file will be transferred
  • Serial device that supports the Kermit protocol

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  1. 1

    Connect one end of the serial console cable into the serial port on the Windows 7 computer. Plug the other end of the serial console cable into the serial port on the device to which you will be transferring files.

  2. 2

    Select the "Start" button on the desktop of the Windows 7 computer, then click the "Search" box. Type "hypertrm.exe" and double-click on the HyperTerminal program icon that appears in the left pane. The HyperTerminal program will appear.

  3. 3

    Enter a name for the "HyperTerminal" session in the "Name:" field that appears and tap the "Enter" key. Select "Connect using:" and click the name of the comm port used for the serial device connection, then tap the "Enter" key.

  4. 4

    Click the "Bits per second:" box and select the parameter that is required for communications with the serial device. Select the parameters for "Data bits," "Parity," "Stop bits," and "Flow Control" by clicking the drop-down box next to each setting and the clicking the parameter required by the serial device. Click the "OK" button to save the settings.

  5. 5

    Press the "Enter" key and the command line interface of the serial device will appear. Click the "Transfer" menu in the main HyperTerminal window, and then click "Send File."

  6. 6

    Click the "Browse" button and then navigate to the file you wish to transfer. Click on the file and then press the "Enter" key. Click the "Protocol" drop-down box and select the "Kermit" protocol.

  7. 7

    Click the "Send" button and the file will be sent via the Kermit protocol to the serial device.

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