RTConnect Modbus TCP Enablement Module

Adding Modbus TCP to Your Device Has Never Been Easier

Adding Modbus TCP to your product will no longer require a long or complicated product redesign. With the RTConnect module, remove the technical burden of integrating communications software into your device’s application. Any existing device with a serial port can now add Modbus TCP with a simple PCB alteration.

Standard Unit Price


*Initial development and one time set-up fee not included.

RTConnect Modbus TCP Enablement Module


How Does the Module Work?

Simply supply the module with 3.3VDC and route your existing serial interface to the module. The module can be configured to interface with your device over Modbus RTU or ASCII commands. You don’t have to change any application code in your device. The RTConnect module maps data to and from your device for presentation on Modbus TCP, EtherNet/IP, BACnet/IP, MQTT, OPC UA and PROFINET networks.

What Work Do I Have to Do to Use This Module?

Our goal is simple, this integration is a hardware project, no change to your software. You don’t have to drop in an API (like some other solutions!), eliminating coding. Simply put… we do the work.

Eliminate the Overhead of Modbus TCP Deployment

Deploying and maintaining the growing variants of communication technology is untenable for most device manufactures. The resources required are immense and the effort is a distraction from focusing on your device’s core features and functions. The RTConnect module removes that burden. You get an entire suite of protocols, especially Modbus TCP to help you access the leading automation market segments.

The Benefit of a Protocol Partner

You make devices that do all kinds of wonderful things, but you’re not an industrial networking expert, nor should you be. That’s where RTA comes in. Our only business is helping device developers just like you get network enabled with products like our royalty-free source code stacks. It’s all we’ve been doing for more than 30 years.

The Growing Challenges of Modbus TCP Compliance

Every year communication standards evolve. New features and performance standards are enhanced. It’s also true that simply bringing a conformant device to market doesn’t mean it will be easy for your customer to use in their applications. An expert partner that can maintain Modbus TCP and offer expert consultation on topics like data modeling and navigating conformance is imperative to success. The RTConnect module is backed by a team singularly focused on the communication protocol experience.

Modbus TCP: The Product of the 1970s

Modbus has found its way into hundreds of thousands—if not millions of devices. You can find it in every industry and geography. You can find it in every kind of device from absolute encoders to zero-point thermometers. RTA has been working with Modbus TCP devices since its inception.

Our support team will assist and validate your device before it goes into use for official certification, saving you time, money and headaches.

What Does Guaranteed Stock Release Plan Mean?

Once we have worked with you to develop your custom part complete with data mapping, we will review your quantity commitments, needs and timing each year and we’ll guarantee stock plus two releases are available to pull up as needed.

What Is the Development Process and What Are the Associated Costs?

At the start of each project, you meet with device communications consultants. They work with you to understand the data available from your device and then advise on the appropriate data models for each presentation protocol. That information is turned into configuration files and you’re issued a customer part number, allowing you to order parts pre-loaded with your configuration. Your customers will never know the connector is a gateway.

We also offer services to support you through device certification for Modbus TCP.

What Are My Next Steps?

Call a member of our team to talk through your particular application needs and explore how the RTConnect Module can be integrated into your product. We can even schedule a webinar with you and/or your team to walk through the module and development process.

What our Customers are Saying

“The 435NBA is an excellent serial to EtherNet interface to an Allen-Bradley ControlLogix PLC. We had our barcode scanner up and running within a day with your tech support. Great web interface makes it easy. We will be using more of these in the future.”

Jeff K.

"Industrial automation domain experts – the guys who build a lot of valves, pumps, drives, etc,, and need a way to talk to their devices – will find their Modbus champion in John Rinaldi. The author has almost as much shop floor experience as Modbus itself, the 40 years it’s been (and remains) the sole open source electronic networking protocol for connecting automation systems. John brings his trademark passion for, and quirky treatment of, all things industrial automation, to Modbus in the 21st Century. Internet of Things? OPC UA? All good – but automation engineers for whom small, simple, cheap, fast solutions will suffice will walk away from this book joining John in declaring ‘Hail Modbus! Modbus forever!"

Heather A. / Writer, Editor & Content Strategist