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Ambex YM-models (with Watlow controller) - Roasting Intelligence Setup (Beta)

This manual covers the connection of an Ambex YM-model roast machine with Watlow controls to Cropster's Roasting Intelligence.

Written by Nikolett Takacs

Updated at May 18th, 2026

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  • Connecting your roast machine
    General information Plug&Play connectors Alternative connection options Sample & Multi-barrel roasters Temperature sensors Drivers
  • Roast
    Getting Started Inventory Management Sample Management Roast Scheduling Roasting Processes Reporting Troubleshooting
  • Roasting Intelligence
    Getting Started Using Roasting Intelligence Roasting Intelligence AI Features Customization and Preferences Troubleshooting
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  • Origin
    Getting Started Operations Reporting
  • Quality Control
    Cupping Physical Analysis
  • Sharing & Exporting Cropster Data
  • Account & Administration
    General Account Management General User Management Troubleshooting
+ More

Table of Contents

Specifications Requirements Supported measurements Roasting Intelligence Setup Installing the Roasting Intelligence software Establishing a connection to the machine Troubleshooting

This roast machine is currently in the Beta stage of development at Cropster.
To access this integration, please register for Beta testing by completing the provided form here.

Specifications

Requirements

  • USB cable
  • VCP driver (FTDI)
    • Windows 11
    • Windows 10
    • macOS X 10.9 to 10.14

The driver may already be pre-installed with your operating system.

Supported measurements

  • Bean temperature
  • Exhaust temperature

Roasting Intelligence Setup

Installing the Roasting Intelligence software

  1. Download Roasting Intelligence.
  2. Complete the installation process by following the steps provided.
  3. Double-click the Cropster icon on your desktop to access Roasting Intelligence.
  4. Click the green Login with browser button.

    Login button
     
  5. You will be redirected to a login page in your default browser.
  6. Enter your email and Password and click the green Sign in with password button.
    Use the same credentials that you use to access the online platform.

    Login screen

Establishing a connection to the machine

The images below are for reference and may vary slightly from your screen.

Important details to keep in mind:

  • Before you start configuring your roast machine, ensure that you have added it via the online platform C-sar.
  • Only click Save after you've completed all settings in Roasting Intelligence.
  1. Select Gear icon Preferences > Machine > Configuration.
  2. To choose the Roast machine, click on the dropdown menu in the Machine section.
  3. Click the + Add connector option to choose your connector from the dropdown list.
  4. Select Generic Modbus over serial port from the dropdown.
  5. Click Select to add the connector.
    Select connector screen
  6. Click on the Gear icon Gear icon in the Connector setup section to open and configure more settings.
  7. Copy the settings as shown in the screenshot below, and select the Serial port and Temperature unit:
    • Serial port:
      • Windows: Select COMx
      • MacOS: Select USBx
    • Temperature unit: 
      • Select Celsius or Fahrenheit according to the temperature unit displayed on the machine.
  8. Click the checkbox next to "Big-Endian word order (32-bit)", then click OK.

    Serial port settings
     
  9. Navigate to the Machine > Measurements tab. All supported measurements will be displayed.
  10. To activate the measurements, simply click the green toggle button.
  11. Enable the desired measurements and choose Generic Modbus over serial port as the connector type.
  12. (Optional) Change the order of the measurements by using the Drag and drop icon Drag and Drop icon and move it into position.
  13. Click Save to finalize the changes.

    Save settings
     
  14. Restart Roasting Intelligence. If the setup was successful, you will see the temperature values displayed on the right-hand side of the screen following the restart.
    Temperature readouts in RI

Learn more about the Roasting Intelligence Preferences.

Troubleshooting

If Roasting Intelligence indicates No source connected and/or you cannot see any measurements, please check the following:

  • Is the roast machine connected to the computer?
  • Have you downloaded the driver for the USB serial converter?
  • Is the correct serial port within the RI selected?
  • On macOS: macOS X10.15 to macOS 11 (this is a Beta driver release and the installer should be run from the /Applications folder on your machine)

If this does not help, submit a ticket to Cropster Technical Support, and our representatives will assist you.

ambex ym models ambex with watlow controller ambex roasting intelligence

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  • Roasting Intelligence Preferences
  • Roasting Intelligence - Getting Started
  • How to change the measurement size in Roasting Intelligence

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