Complexity slows everything down, especially in the field where delays can lead to chaotic deployment, challenging troubleshooting, and hard-to-schedule IT support.

So, we made a gateway that clears the path to the cloud without demanding custom development, special tools, or a high-tech engineering team.

Introducing the MSA FieldServer Modbus IoT Gateway.

Now you don’t have to replace your Modbus devices to modernize your system. This gateway lets you keep what works – and take it further to help make your systems smarter, your teams more efficient, and your data more actionable.

• Get real-time alerts via SMS or email when thresholds are crossed.
• Access and configure devices remotely without rolling a truck for an on-site visit.
• Export historical data for trend analysis and performance tracking.
• Integrate with existing BMS, SCADA, or cloud platforms using standard protocols.

We’ve been building Modbus gateways for more than 25 years, almost as long as the Modbus protocol itself. This is the next generation. Keep reading to learn how (and why) we built our newest gateway and find out what gives it the edge.

The Challenge: Modbus in a Cloud-First Era 

Modbus has earned its place as the go-to protocol in industrial environments, largely because it’s reliable, familiar, and already built into countless devices. But as interoperability, remote monitoring, and real-time control have become more prevalent, these legacy devices are having a hard time keeping up.

Modbus isn’t the problem. It’s a time-tested protocol that continues to evolve since its inception in 1979. But it was never designed to support cloud-first strategies, remote diagnostics, and enterprise-level security.

That’s a job for the new FieldServer Modbus IoT Gateway. Designed to help OEMs and system integrators unlock valuable Modbus data, it does so without adding complexity or requiring expensive changes to infrastructure. 

Bridging the Gap Between Legacy Systems and Modern Expectations

When it comes to connecting Modbus devices to the cloud, in-the-field teams and systems integrators often face these key challenges:

1. Integration friction: Custom code and middleware slow down deployment.
2. Limited visibility: Lack of remote access can limit proactive maintenance.
3. Security concerns: Unsecured connections create vulnerabilities.

Because it combines a familiar protocol with a modern interface, the new FieldServer Modbus IoT Gateway virtually eliminates these obstacles. It offers a streamlined, secure, and scalable way to integrate legacy Modbus devices with modern platforms.

It supports both Modbus RTU (serial) and Modbus TCP/IP, so it speaks the same language as the devices it connects to. It also translates data into MQTT or OPC UA, making data instantly usable by cloud platforms, SCADA systems, and state-of-the-art applications.

Here’s an at-a-glance look at what the FieldServer Modbus IoT Gateway can do:

• Publish to MQTT brokers
• Read/write via OPC UA
• Push data to the MSA Grid or a third-party cloud
• Export data using JSON, CSV, Webhooks, or RESTful API

Designed for the People Who Use It

We’ve worked with OEMs, contractors, and engineers long enough to know what matters in the field – and we embedded these features into our design.

Easy-to-Setup Profiles

Allows integrators to reuse configurations across projects, essentially eliminating rework.

Onboard Diagnostics

Let’s users see what’s working and what’s not, without needing anything extra.

Multiple Network Options

Accommodates Ethernet, Wi-Fi, or LTE connections because not every panel is wired, and not every location is near a router.

Compact and Rugged

It’s built to withstand all types of environments and quietly work wherever it’s needed: fire panels, industrial operations, and remote locations.

Security That Doesn’t Get in the Way

We’ve seen projects stall because security concerns were an issue. That’s why we continue to make FieldSafe a built-in part of our gateway solutions, including this one.

• HTTPS with TLS/SSL encryption
• Robust, role-based user authorization and password management features
• Built-in or user-provided TLS certificates
• Configurable IP network routing and firewall options

A Solution that Simply Works

We didn’t design this gateway to be the centerpiece of the control room. We designed it to disappear into operational workflows, enabling what’s needed, when it’s needed. We understand that there are plenty of Modbus devices still doing the job they were built for. This isn’t a replacement for them. Instead, it’s a smarter way to make Modbus devices visible, useful, and securely connected.

Whether you’re an OEM embedding gateways into your product, a contractor managing multi-site rollouts, or a facility engineer upgrading a critical system, the FieldServer Modbus IoT Gateway is designed for:

• Rapid Deployment: GUI-based setup and reusable profiles eliminate manual mapping to speed rollout.

• Cloud-Connected Visibility: Push up to 1,000 data points, view live dashboards or export for deeper analysis.
• Remote Access and Alerts: Configure, monitor, and receive SMS/email notifications from anywhere, anytime.
• Secure Integration: TLS/SSL encryption, role-based access, and firewall controls protect your network.
• Broad Compatibility: Supports Ethernet, Wi-Fi, LTE; integrates with SCADA, BMS, or third-party cloud platforms via MQTT/OPC UA.

We’ve been refining this solution for a long time, so we’re proud to share it with the teams who need it most.

Ready to modernize your Modbus devices? Learn more about the new FieldServer Modbus IoT Gateway, or contact us for support on your next project.