A power equipment supplier needed Modbus RTU battery charger data exposed to a DNP3 serial master for an electrical substation deployment. Chipkin QuickServer delivered a working serial-to-serial protocol bridge and provided the mapping detail the customer needed for future documentation and expansion.
This was a strong case-study candidate because it was not just another Modbus job. The customer was implementing DNP3 for the first time in this product line, and the deployment had to fit the realities of substation monitoring, legacy serial transport, and exact point mapping between two very different protocols.
At a Glance
- Industry: Power distribution / electrical substations
- Customer: Power equipment supplier and technical service team
- Facility type: Electrical substation monitoring deployment
- Client role: Engineering and technical service team shipping integrated charger systems
- Project scale: Battery charger telemetry and mapped status points exposed to a DNP3 serial master
- Protocols: From: Modbus RTU → To: DNP3 Serial
- Chipkin product: Chipkin QuickServer FS-QS-2X10
- Project start: December 2021
Battery charger controller → Modbus RTU → Chipkin QuickServer → DNP3 Serial → SCADA / RTU master
Modbus RTU to DNP3 Serial Challenge
The upstream/server side was a battery charger exposing data over Modbus RTU. The downstream/client side was a DNP3 serial master used in a substation monitoring environment. That meant the project depended on both protocol translation and serial-layer clarity. The bridge had to fit the physical transport requirements of the installed system while still presenting the right telemetry on the DNP3 side.
This was also the customer’s first DNP3 implementation in that product context. The project therefore needed more than a working configuration file. It needed a gateway workflow and a point-mapping model the customer’s engineering team could understand, validate, and document for future use.
Another important detail was device behavior. The battery charger’s Modbus implementation required deliberate polling and point mapping choices rather than assuming a generic bulk-read pattern. That kind of vendor-specific nuance is exactly where protocol conversion projects either become durable templates or stay one-off troubleshooting exercises.
Why Chipkin
This was a strong fit for Chipkin because the customer needed a first-time DNP3 implementation handled with enough rigor to be reused. Chipkin QuickServer provided the protocol bridge, but the real value was translating the battery charger data into a DNP3 serial presentation the customer could ship and support with confidence.
Chipkin also added value by providing documentation support alongside the configuration. For a supplier adding a new protocol path to an existing product family, a working gateway is only part of the win. The mapping has to be understandable enough to support future internal documentation and later point expansion.
The Solution
Chipkin configured Chipkin QuickServer to read the charger over Modbus RTU and serve the required data over DNP3 Serial. The final layout matched the physical requirements of the installation so the Modbus and DNP3 sides each used the proper serial path on the gateway.
Chipkin then provided a Modbus-to-DNP3 mapping document that helped the customer’s engineering team understand exactly how the point translation was structured. That moved the project beyond one successful test and into something the customer could document, explain internally, and expand later as needed.
The result was a working first DNP3 integration path for the customer and a stronger foundation for future substation-oriented protocol projects.
Battery Charger Integration Results
The project delivered a working Modbus RTU to DNP3 Serial handoff for substation monitoring.
Project proof points:
- A first-time DNP3 implementation was completed successfully for the customer’s product line.
- The final serial layout supported both the Modbus charger side and the DNP3 master side cleanly.
- A Modbus-to-DNP3 mapping document gave the customer a reusable technical reference for future documentation.
- Additional points were later expanded on the same integration path, showing ongoing confidence in the approach.
The customer’s technical service team confirmed the key milestone directly:
“I tried the new configuration and it worked correctly. Thanks for your help.”
— Technical service engineer, power equipment supplier
Have a Similar Modbus-to-DNP3 Project?
Need to expose Modbus RTU device data to a DNP3 Serial master without redesigning the upstream equipment? Chipkin can help with QuickServer configuration, point mapping, and serial protocol conversion for power and utility environments. Tell us about your project.