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How to Find the COM Port Number on a Ruby Console

This article outlines the steps to identify which COM Port is being used on a Ruby SuperSystem Console

Updated over a month ago

✅ Note: These steps apply only to the old Ruby SuperSystem

Step-by-Step Process

  1. Access the Sales Screen

  • Press Exit until [SALES] appears on the screen

2. Navigate to Maintenance

  • Use the [Ticket Print/Right Arrow] to move to [MAINTENANCE]

  • Press ENTER

  • Enter your ID and Password (Default: ID = 1, Password = 123)

3. Find the Display I/O Configuration

  • Press ENTER to view 1. VERSION INFORMATION

  • Use the [Ticket Print/Right Arrow] until you reach 3. DISPLAY I/O CONFIGURATION

  • Press ENTER

4. Locate the COM Port Information

  • Continue pressing the [Ticket Print/Right Arrow] until you see a line similar to:

    bashCopyEditgcomms.ldm /dev/com5 19200 n 8 1

  • The COM Port number will be displayed after /dev/com

5. Verify the COM Port for the Back Office Connection

  • Ensure the same COM Port number is being used when connecting the Back Office Network Cable to the Ruby Register

Frequently Asked Questions

What if I don’t see the COM Port information?

  • Try exiting and repeating the steps carefully.

  • If the issue persists, restart the Ruby Console and check again.

What is the default ID and password?

  • The default ID is 1 and Password is 123, unless they have been changed by the store

Why do I need to check the COM Port?

  • The correct COM Port number must match the one used for the Back Office Network Connection to ensure proper communication with the system.

What should I do if the COM Port number doesn’t match?

  • Double-check the physical connection at the back of your Ruby Register and update the settings accordingly.

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