SUNSPEC Modbus

A CLEAR PATH TO COMPLIANCE WITH THE IEEE 1547-2018 COMMUNICATIONS MANDATE

SunSpec Modbus defines common parameters and settings for monitoring and controlling DERs and their capabilities, such as voltage regulation, setting power factor, and power export limiting. It also structures data to increase interoperability. Leveraging the Modbus1 protocol, widely adopted for industrial electronic devices since the 1980s, SunSpec Alliance created the SunSpec Modbus interface in 2009 and has continually extended it to cover all solar inverters and many other commercially available DERs.

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COST EFFECTIVE

The cost of supporting SunSpec Modbus is low because the physical network interface exists in most DER devices.

SIMPLE INTEGRATION

SunSpec provides royalty-free specifications, reference software, and development tools to help implementation teams get their products to market.

IEEE 1547-2018
COMPLIANCE

Referenced in IEEE 1547-2018, SunSpec Modbus is the quickest way to insure compliance.

GET SUNSPEC MODBUS CERTIFIED

APPLY FOR CERTIFICATION

TOOLS AND RESOURCES FOR SUNSPEC MODBUS

SOFTWARE TOOLS

ACCESS SOFTWARE TOOLS FOR SUNSPEC MODBUS

Available to Members of the SunSpec Alliance, the SunSpec System Validation Platform (SVP) Dashboard is a Microsoft Windows application that enables visibility and control of SunSpec Modbus-enabled devices. The web browser-based interface leverages standardized SunSpec device information models and a web-service application program interface (API) for test harness integration, certification, and support activities.

ACCESS SUNSPEC DASHBOARD

EDUCATION

SUNSPEC MODBUS EDUCATION

SunSpec offers online education courses for DER industry professionals working with SunSpec Modbus. Earn a certificate in Communications Software Development for DER, or take the Implementation of SunSpec Modbus course. SunSpec Academy courses are free to SunSpec Alliance Members!

VIEW SUNSPEC COURSES

WORK GROUPS

SUNSPEC MODBUS WORK GROUP

Open exclusively to Members of the SunSpec Alliance, the SunSpec Modbus Work Group works on updates to the SunSpec Modbus specifications. The updates include additions to SunSpec information modeling, new DER information models for IEEE 1547-2018 support, and a SunSpec Modbus Conformance Profile for IEEE 1547-2018 compliance.

VIEW THE SUNSPEC MODBUS WORK GROUP

A CLEAR PATH TO COMPLIANCE WITH IEEE 1547-2018

SunSpec Modbus is an open standard, referenced in IEEE 1547-2018, that enables interoperability amongst DER system components. SunSpec specifications reduce the cost of system implementation. They enable applications to be written using a single, standard view of the components comprising a solar plant, independent of manufacturer and model; and enable devices to maximize their potential deployment possibilities by interoperating with applications and other protocols such as IEEE 2030.5 and IEEE 1815.

December 20, 2024
SunSpec Accepts Nomination to Manage CSIP Test Procedures
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November 22, 2024
WEBINAR RECAP: SUNSPEC EXPRESS TEST™ PROGRAM LAUNCH
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October 29, 2024
Modbus Specification Updates
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    Download the SunSpec Modbus for 1547 Specification Package