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What’s the difference between the X-400 and X-600M?

Learn the differences between two of our most popular and powerful controllers.

Both the X-400 and the X-600M are expandable with our modular I/O products. However, they have some differences between them, such as security, dashboards, number of supported I/O and more.


The X-600M is our master controller that offers multiple customizable dashboards, making multiple device management easy. With support for up to 1,024 I/O, the X-600M acts as a simple SCADA that is perfect for large sized projects that need to be managed in one place.

  • X-600M Industrial I/O Web Controller

    X-600M™ | Web-Enabled I/O Controller

    The X-600M™ is one of the most capable and flexible ControlByWeb PLCs. Add up to 64 expansion modules and remotely monitor and control up to 1,024 I/O. Create custom logic through the X-600M interface and run your application through a built-in web server and web browser.
    • Expandable, Up to 1,024 I/O
    • Relays, Analog/Digital/Thermocouple Inputs
    • Up to 32 Temperature Sensors
    • GUI Dashboard

    [frequentlyBought ids="7635,7621,7577,7798"]

    VIEW PRODUCTView Product


The X-400 uses our latest 4 Series firmware. This software provides the X-400 with the most up to date security and programming features. It’s easier to use, for both the setup of the unit and the end user. With 64 supported I/O, the X-400 is a great option for small to mid-sized projects.

  • X-400 and X-400C with Cell Icon

    X-400™ | Modular I/O Controller

    The X-400™ is a web-enabled controller that allows for up to 32 added expansion modules and/or remote I/O devices. Expansion modules are connected directly to the X-400 via ribbon cable, or remotely with other CBW devices via P2P—allowing for monitoring and control of up to 64 I/O.

    The X-400C offers wireless capability with a built-in, low-power LTE-M cellular radio. Cellular models with an annual data plan include a dual SIM that provides combined coverage through AT&T and T-Mobile, automatically switching between the two for the best coverage.

    Expandable, Up to 64 I/O

    Relays, Analog & Digital Inputs

    Up to 16 temp sensors

    Cellular version available

    [frequentlyBought ids="7635,34491,7624,7577"]

    VIEW PRODUCTView Product

If you have any additional questions, please contact our support team.

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