The X-404™ is purpose-built to monitor up to 32 Modbus RS-485 devices and/or sensors. It also includes a 1-wire bus for temperature and humidity monitoring.
The X-404C offers wireless capability with a built-in cellular modem.
Monitor any sensor or equipment that has an RS-485 output with the X-404. It functions as a web-based, cloud-compatible Modbus master for third-party RS-485 modbus sensors and devices. This includes level, current , pressure, temperature, and humidity sensors.
Cellular simplifies your installation and fits where no wired infrastructure exists. There’s no need for third-party resources or IT intervention—everything you need from a PLC is included with the X-404C.
Primary or Backup
With the X-404C, you have the option to use Ethernet as the primary connection to the network and cellular as a failover. This allows logging, remote access, and email alerts even if Ethernet fails.
Built-In Connectivity
The X-404C includes an omnidirectional antenna for use with the embedded LTE-M cellular radio. The antenna is FCC compliant and will not cause interference when installed correctly.
Configurable Status Page
The X-404C is powered by a lightweight, built-in user interface. Cellular devices have additional settings within the UI where users can review their signal strength, see registration status, set cellular mode and ping interval, and more.
Combined network coverage map for ControlByWeb cellular devices. Updated July 2023.
Cellular-Enabled I/O for Remote Monitoring
No WiFi Necessary
Cellular simplifies your installation and fits where no wired infrastructure exists. There’s no need for third-party resources or IT intervention—everything you need from a PLC is included with the X-404C.
Primary or Backup
With the X-404C, you have the option to use Ethernet as the primary connection to the network and cellular as a failover. This allows logging, remote access, and email alerts even if Ethernet fails.
Power Your Whole Setup
Expansion modules have a ribbon-cable expansion bus that allows for shared I/O among ControlByWeb devices. It only requires one cellular-enabled PLC to enable all connected I/O to operate wirelessly.
Built-In Connectivity
The X-404C includes an omnidirectional antenna for use with the embedded LTE-M cellular radio. The antenna is FCC compliant and will not cause interference when installed correctly.
Configurable Status Page
The X-404C is powered by a lightweight, built-in user interface. Cellular devices have additional settings within the UI where users can review their signal strength, see registration status, set cellular mode and ping interval, and more.
Combined network coverage map for ControlByWeb cellular devices. Click image to expand.
Powerful 400 Series Features
Integration Ready
We support HTTP GET, XML, JSON, SNMP, Modbus TCP/IP, and our Cloud API with more on the way.
No-Code Programmable Logic
Our intuitive Task Builder empowers you to build custom logic using drop-down menus in an if-this-then-that flow.
P2P Networking & Remote I/O
Devices can communicate through Peer-to-Peer (P2P) networking to share I/O among other ControlByWeb controllers, assign any device as master, set up multiple masters, and link remote inputs and relay control.
Email Notifications
Stay in control of operations with real-time monitoring. Add intelligence to your emails through programmable logic to instantly send notifications to the right people and eliminate false alarms.
Easy-to-Use Embedded UI
Our devices come with a simple embedded user interface that will enable you to easily monitor, manage, and control ControlByWeb PLCs from any standard web browser.
Data Logging
Enjoy scheduled and conditional logging with email and FTP log exports. Add the optional ControlByWeb Cloud for remote access and downloadable logs.
Cloud Compatible
Enhance your capabilities with the ControlByWeb Cloud. Gain enhanced features such as simplified remote device access, data logging, and advanced analytics.
Trusted Device Security
Our controllers have no built-in OS or file system, making them less prone to vulnerabilities. Third-party consultants and government agencies test the cybersecurity of our controllers.
IIoT Monitoring & Control
Access the device directly through an assigned IP address. Set up your network settings the way you want, to limit or allow remote access through the cloud.
IMPORTANT: As a result of inline improvements to device hardware, different firmware versions have been created and are not cross-compatible. Installing the wrong firmware will not work. Please select the correct firmware for your current firmware version below:
For your convenience we have set up a live X-404 unit for testing and evaluation. By clicking the links below you have full access to this live unit. You can make changes to the configuration and settings through the setup pages and you can control X-404 through its control page. The control page allows you to change the state of the relay and view the current state of the input.
The diagram illustrates how this demonstration is wired. Nothing is connected to the relay contacts; however, you can still turn the relay on and off to see how it works. The input state only changes when a voltage is applied to the input. For this demonstration, we have connected one of our X-332 controllers to the input of the X-404. You can apply a voltage to the input of the X-404 by accessing the control page for the X-332 (Digital Input Control Page).
Important Information
Multiple users may be accessing this device simultaneously so the device can change while you are using it.
This unit will be reset to factory defaults daily at 2:30AM MST.
Please DO NOT change network or password settings.
This user-friendly display is compatible with select ControlByWeb devices and does more than simply display its sensor’s readings. Features include the ability to alter sensor settings using the Modbus registry and to power a sensor with its batteries. Works on any Modbus network. *Cables and connectors not included.
Easy 3-button programming
RS-485: 9600 baud (Modbus RTU)
Local display for up to 10 sensors
Display: 5 digit LCD, 0.4 in. digits
[frequentlyBought ids="7927,7929,6252"]
View Product
This product has multiple variants. The options may be chosen on the product page
🦃 Our office will be closed November 28–29 in observance of Thanksgiving. Orders placed during this time will be processed on Monday, December 2.Dismiss
Manage Consent
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
