Connect a Modbus RTU to a DH+ Device

Connect your Modbus RTU Server to a DH+ Device through a gateway. Link up to as many as 32 DH+ devices.





Connect Up To 32 Modbus RTU Server Devices to a Serial PLC5 or SLC PLCs

By joining a Modbus RTU Server to a DH+ device, you can connect up to 32 Modbus RTU Servers to a legacy Allen-Bradley PLC. It’s the perfect tool to save legacy PLCs from the scrap pile and extend their useful life.

How Do I Use the 460MMDHM-D2E in My Application?

The mapping is very straightforward. Modbus register and coil data is mapped to files in the PLCs data tables. For example, you can map N7:200 to Modbus register 40200 in Modbus server 10. Data transfer is bidirectional. It really is that simple.

What Is Modbus RTU and What It Can Do for You?

Discover whether a Modbus RTU aligns with your specific needs by visiting our Modbus RTU tech page – Modbus RTU, derived from the client/server architecture, stands as an open serial protocol. Its widespread acceptance in the realm of serial level protocols owes to its ease of use and reliability.

Why Use Real Time Automation as a Gateway Supplier?

While there are certainly other companies offering protocol gateways, there is no one who provides the level of support and service that you receive from Real Time Automation. When you call us, a live person answers the phone. If you talk with our sales team, you will get honest answers and recommendations. And rest assured, all the support you get is from an engineer who had a hand in the product’s development, and support doesn’t need a ticket or 24-hour wait. We get back to you as soon as possible. It’s an RTA promise.

DH+ Features

Operation Mode: DH+ Master
PLCs Supported: 5/04, PLC5
Maximum Devices Supported: 32
Scan Lines: 100 input / 100 output
Supported Data Types: 100 Integers or 100 Binaries, or 50 floats, 82 character string per Scan line

Modbus RTU Client Features

Modbus Operation Modes: Modbus RTU Client
Function Codes Supported: 1, 2, 3, 4, 5, 6, 15 & 16
Swapping: Byte and Word Swapping
Maximum Modbus RTU Client Devices: 32
Number Read/Write Scan Lines per RTU Server Device: 200 Total - 100 reads & 100 writes
Scan Line Support: Up to 125 Registers or 512 Coils

What our Customers are Saying

“I challenged a customer to get it working by the time I got back from his break room with a Coke and he indeed had it working when I got back. He then said, "It’s worth twice the price!"”

Eric P. / Kendall Electric

“Everything seems to be working as we imagined. Thanks for the great response time. I did not see any way to save the configuration other than screen shots, but the configuration did not get lost in the update. Thanks again, and you were a pleasure to work with.”

Kevin L. / Extol, Inc.