WHAT are hmi systems?
Remote Monitoring and Protocol Converting with Monico HMI Solutions
A pre-configured solution that provides a communications interface to the Caterpillar® line of Industrial Engines and Generator Sets via different protocols and data maps.
Each Gateway HMI is a protocol converter and a full featured HMI that provides direct access to engine monitoring parameters from industrial equipment via many different protocols and memory map formats. The HMIs offer all the same features of the Gateways™ with the addition of an operator interface.

HMI System Benefits & Features
- Pre-configured solutions with over 400 data registers
- UL 1604 Class I Division II approval
- Outdoor rated with UV protection
- Built-in web server
- SMTP/SMS mail server
- Real-time data logging via compact flash (2 GB max)
- Full-featured touch screen with full graphics capability
- Available in 8, 10 and 15 inch screens
- Approved for hazardous location installations under UL1604
Download Datasheet →
J1939 Gateway HMI
Integrated Protocol Converter with Local Operator Interface
The J1939 Gateway HMI combines robust protocol conversion with a full-featured touchscreen HMI, enabling direct access to engine monitoring data across a wide range of industrial protocols and memory map formats. It includes all the capabilities of the Monico J1939 Gateway™, with the added benefit of a local operator interface—ideal for environments where on-site visibility and control are critical.
Designed as a plug & play solution, the HMI requires minimal configuration and no intermediate devices. Whether you’re deploying it in a factory or a remote field location, Monico’s team can pre-configure your HMI for fast, reliable operation.
Beyond HMI Protocol Conversion
Comprehensive Local and Remote Monitoring Capabilities
The J1939 Gateway HMI goes far beyond standard protocol translation. It acts as a central point for monitoring, control, and system integration:
- Touchscreen HMI: Provides intuitive local visualization and interaction with your equipment.
- Built-in Web Server: Access real-time system data from any location via a secure browser-based interface.
- SMTP/SMS Alerts: Receive automatic email or text notifications for critical events.
- Fault Code Translation: Converts J1939 fault codes into readable, actionable text. into text descriptions
- Wide Protocol Support: Integrates engines, gensets, and supporting equipment into a unified monitoring system, no matter the protocol mix.
Engineered for Industrial Environments
Monico’s HMI systems are purpose-built for rugged, real-world use:
- Bright, Outdoor-Viewable Screens with UV protection
- Certified for Hazardous Locations (UL1604)
- Pre-configured Options with over 400 data registers
- Real-Time Data Logging and graphical interface support
There is no better product than our J1939 Gateway HMI for communicating over SAE J1939 and CAN bus when you want the added benefit of a local touch screen operator interface. Our engineering team has extensive experience working with customers across multiple industries—delivering solutions for remote CAN bus monitoring, J1939-to-PLC integrations, and complete system visibility. Whether you need a J1939 HMI, a CAN bus interface, or a flexible edge-to-cloud monitoring solution, Monico delivers with reliability and expertise.
Specifics on the J1939 Gateway HMI
Data Input
- Two-wire J1939 Data Link
- Supports data aggregation from multiple devices and protocols
Host Interfaces
- Modbus RTU & TCP/IP via Serial and Ethernet
- Supports major PLC protocols including, Allen Bradley, GE Fanuc, Siemens, BACnet and more
Additional Features
- Includes all core functions of the standard J1939 Gateway
- Enhanced with a high-resolution Color TFT Touchscreen HMI for local visualization and control
CDL Gateway HMI
Purpose-Built for Caterpillar® Engine Monitoring and Control
The CDL Gateway HMI is a rugged, full-featured protocol converter and touchscreen HMI designed to deliver direct access to engine monitoring data from Caterpillar® equipment. It includes all core capabilities of the CDL Gateway™—with the added benefit of a local operator interface for real-time visualization, diagnostics, and control.
Supporting multiple protocols and memory map formats, the HMI enables seamless communication between CAT® engines and PLCs/SCADA systems, without requiring intermediate devices or complex configuration.
Optimized for Caterpillar® Applications
Direct Access to Engine Data, Fault Codes, and Diagnostics
Engineered specifically for Caterpillar® equipment, the CDL Gateway HMI can interface with:
- EMCP II and EMCP II+ generator sets
- G3600, G3500, and GCM34 gas engines
The system provides:
- Real-time engine data
- Fault codes with human-readable descriptions
- Diagnostic and event codes
- Direct data transfer to Allen-Bradley, GE Fanuc, Siemens, and other major PLCs—with little to no programming
By replacing legacy solutions like the CCM Module, PL1000E, and ProSoft cards, the CDL Gateway HMI simplifies integration and reduces hardware complexity.
Field-Ready and Outdoor Rated
Industrial Design for Harsh Environments
Built to withstand demanding field conditions, the CDL Gateway HMI features:
- High-brightness, UV-protected touchscreen for sunlight readability
- UL1604 certification for hazardous locations
- Support for up to 7 simultaneous protocols across 4 physical ports
- Graphical user interface for simplified operator interaction
Its rugged build and powerful interface make it suitable as a central operator panel for engine, station, and system-level data.
Remote Monitoring Made Simple
Built-In Web Server + Remote Alerts
Ideal for remote assets and unmanned sites, the CDL Gateway HMI includes:
- Embedded web server for browser-based access from any internet-connected device
- SMTP/SMS server for email and text notifications on alarms, shutdowns, and events
These features enable efficient troubleshooting and maintenance planning— minimizing site visits and reducing downtime.
One-Step CAT® Data Link to SCADA Conversion
The CDL Gateway HMI is designed to communicate over CAT® Data Link and deliver collected engine and system data directly to your SCADA platform. Unlike traditional setups that require manual fault code lookups and additional hardware, this HMI translates Caterpillar® diagnostic information into plain-text messages—streamlining your SCADA workflows.
The Trusted Caterpillar® HMI Solution
With decades of expertise in engine monitoring and CAT® integration, Monico delivers unmatched capability in a single, compact solution. From real-time diagnostics to full SCADA integration, the CDL Gateway HMI is the most effective, field-proven solution for Caterpillar® HMI and remote monitoring applications.
Available Host Interfaces
- Modbus RTU (Serial)
- Modbus TCP/IP (Ethernet)
- Serial and Ethernet support for seamless integration into diverse control architectures
- Supports major PLC protocols including, Allen Bradley, GE Fanuc, Siemens, BACnet and many more.
Available Pre-Configured Versions
For faster deployment, CDL Gateway HMI units are available in pre-configured versions optimized for:
- Allen Bradley Control Logix, SLC 500 and MicroLogix
- Siemens S7/S5 via PPI, MPI and TCP/IP
- GE 9030 and VersaMAX
- Modbus RTU and TCP/IP
- BACnet MSTP and UDP/IP
Expanded Protocol Support
In addition to the standard preconfigured versions, the CDL Gateway HMI supports a wide range of additional protocols including:
- CANOpen
- DeviceNet
- Ethernet IP
- Garmin NMEA 0183
- Honeywell
- IDEC
- Koyo
- Mitsubishi
- Omron
- Profibus
- Schneider
- Telemechanique
CPC Gateway HMI
Customizable Remote HMI with Advanced Protocol Conversion
The CPC Gateway HMI combines powerful protocol conversion with a full-featured touchscreen interface—giving you direct access to engine and equipment data across diverse industrial protocols and memory map formats. It includes all the capabilities of the Monico CPC Gateway™, with the added benefit of a local operator interface for on-site visibility and control.
Built for plug-and-play deployment, the CPC Gateway HMI requires minimal configuration and eliminates the need for intermediate devices. Whether you’re in a plant or a remote location, Monico’s team can pre-configure your unit for your specific application.
Flexible & Field-Ready
Customizable Monitoring with MonicoView II™
Each unit is fully configurable using Monico’s free MonicoView II™ software, enabling you to tailor data displays and system behavior to your exact needs.
Key hardware features include:
- High-brightness screen with UV protection for outdoor readability
- Hazardous location certified (UL1604)
- Local touch interface for real-time operator interaction
- Support for multiple protocols across multiple ports
Remote Monitoring & Alerting
Comprehensive Access from Anywhere
As with all of our products, this one is a lot more than a simple protocol converter. It can be used to collect information from a myriad of devices that use multiple protocols over multiple ports and put all the information in a common format. The CPC Gateway HMI is also more than a local display—it’s a complete remote monitoring solution:
- Built-in Web Server – View system data from any browser
- SMTP/SMS Alerting – Get real-time alerts via email or text for alarms and shutdowns
- Real-Time Data Logging – Store and report data via Compact Flash for long-term recordkeeping
- Over 400 Preconfigured Registers – Fast setup for common use cases
An HMI SCADA-Ready Integration Solution
Streamlined Data Access for Centralized Systems
Designed to bridge your local equipment with SCADA platforms, the CPC Gateway HMI simplifies remote access and monitoring:
- Direct SCADA integration for engines, gensets, and auxiliary systems
- Automatic fault code translation into human-readable text
- Unified data format from devices using multiple protocols and memory maps
Unlike traditional systems that require multiple steps or devices to extract and translate engine data, the CPC Gateway HMI consolidates it into a single, powerful interface.
Built for Industrial Demands
From local display to remote diagnostics, the CPC Gateway HMI is engineered to support complex, high-demand environments with ease. Whether you’re managing engine health, equipment status, or full-site performance, Monico delivers a flexible, reliable solution trusted by industrial professionals.
Specifics on the CPC Gateway HMI
Data Input
- Two-wire data link (e.g., CAN-based protocols)
- Aggregates data from multiple devices using different protocols
Host Interfaces
- Modbus RTU & TCP/IP via Serial and Ethernet
- Supports major PLC protocols including, Allen Bradley, GE Fanuc, Siemens, BACnet and many more
- Offers all core capabilities of the CDL Gateway, with the addition of a high-resolution Color TFT Touchscreen HMI
Installation Guidelines
- Mount the HMI in a panel near the engine or monitored equipment
- Connect the data link to the CPC Gateway HMI
- Supply 24 VDC power
- View equipment data on the HMI screen in real-time, with graphical visualization
Why Monico
Key advantages that set Monico apart

Your Data is Yours
Your data is securely collected and stored, always remaining under your control, so you can make informed decisions without concerns about data accessibility or third-party restrictions. We’re here to empower you with the insights you need, not limit how you use your data.

Preconfigured, No Coding Required
Our solutions come preconfigured and ready to deploy without the need for complex coding or development. This plug-and-play approach gets you up and running faster, no coding or data analysis required.

Modern Intuitive Platform
Our platform is designed with you in mind, combining modern functionality with an intuitive interface that simplifies data monitoring and visualization. With Monico, you’ll experience an easy-to-navigate system that makes it simple to access, interpret, and act on your data.

OEM-Agnostic, Multi-Protocol Support
Our gateways are preconfigured for your specific equipment and work seamlessly with most major industrial OEMs. With broad protocol support, they easily integrate into mixed fleets—no custom coding or complex setup required.

EASY AS 1,2,3
The Shortest Path to Real-Time
Actionable Intelligence™
1
Schedule a Demo
We’ll walk you through the process and share examples grounded in real data. No big sales pitch. We’ll discuss the problems you’re trying to solve, identify your needs and address your questions about ROI, security, the implementation process, and more.
2
Let Us Configure Your Solution
We won’t just sell you a gateway and wish you luck. Our powerful solutions are simplified for each customer by being pre-configured, down to the serial number of each asset. You’ll easily access data and gain insights from day one, without struggling with siloed data or differing protocols.
3
Count On Us for Support
Our job isn’t done until implementation is successful and you’re getting data exactly the way you want it, where you want it. We’ll provide installation, training and support. In addition, our online resource library is available 24/7.
FAQs
Frequently Asked Questions
What is a Monico HMI system?
A Monico HMI (Human Machine Interface) system is a combined protocol converter and touchscreen interface that allows operators to view and interact with real-time equipment data. It connects directly to industrial engines, gensets, and controllers, eliminating the need for separate gateway and display components.
What protocols do Monico HMIs support?
They support a wide range of protocols including Modbus (RTU/TCP), Allen Bradley, Siemens, BACnet, SNMP, and more. Each HMI can communicate in up to seven protocols simultaneously across four physical ports (RS-232, RS-485, Ethernet).
What screen sizes are available?
Monico HMIs come in 8-inch, 10-inch, and 15-inch touchscreen models, all featuring full-color graphics and a robust, industrial-grade enclosure.
Can the HMI send alerts or emails?
Yes. Monico HMIs include a built-in SMTP/SMS server that enables email and text alerts for alarms, shutdowns, or critical thresholds — helping you respond to issues faster.
What types of systems can Monico HMIs monitor?
They’re ideal for engine and generator monitoring, including Caterpillar®, J1939/CAN-based engines, and multi-vendor industrial systems. HMIs can also collect data from ancillary sensors such as fuel levels, temperatures, pressures, and more.
How is Monico’s HMI different from other industrial HMIs?
Unlike generic HMIs that require complex integration, Monico HMIs come pre-configured with support for over 400 engine and equipment parameters. They also double as protocol converters, making them a streamlined, all-in-one solution for both data translation and operator visualization.
Can Monico HMIs be used in remote or outdoor environments?
Yes. Monico HMIs are outdoor-rated with UV protection, offer extra-bright backlighting for visibility in sunlight, and are UL 1604 Class I Div II approved for hazardous locations.
Do I need to program the HMI?
No programming is required for standard applications. Each HMI is pre-configured for plug-and-play installation. Field adjustments (e.g., IP addresses, screen tweaks) can be made using Monico’s free MonicoView II™ software.
Can I access the HMI remotely?
Yes. Every HMI includes a built-in web server, allowing remote access to live data and HMI screens from any device with a browser and network access.
Can I use the HMI to control equipment, or is it just for display?
While primarily used for monitoring, Monico HMIs can also trigger digital or analog outputs via optional I/O modules — enabling basic control actions like start/stop commands or alarm acknowledgment.
Is there a solution that combines HMI functionality with advanced edge processing?
Yes. For applications that require analytics, cloud integration, or edge-based control logic, Monico’s mCore® SDR offers a powerful upgrade path — and can be paired with HMIs for complete edge-to-cloud visibility.