Sunspec Modbus

WHAT IS IT

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.

Get Sunspec Modbus Certified

Implementing a SunSpec Modbus-enabled device and completing the SunSpec Modbus Certification is the most effective way to guarantee compliance with IEEE 1547-2018 and ensure reliable interoperability.

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. 

TOOLS AND RESOURCES FOR SUNSPEC MODBUS

DOWNLOADS

SOFTWARE TOOLS

EDUCATION

WORK GROUPS

Download SunSpec Modbus Specifications

Available the public at no cost, the SunSpec Modbus Specification package is free to download. Submit the form below to access the package.

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.

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. Members of the SunSpec Alliance receive a 20% discount on all courses.

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. 

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.

SUNSPEC MODBUS NEWS & EVENTS

Get Ready for the Countdown to UL 1741 Certification

The Deadline is Approaching!   Smart inverters are becoming a key component for ensuring a safe and reliable energy grid in the U.S. and states such as California, Hawaii, New York, and Pennsylvania are mobilizing to adopt IEEE 1547-2018, the national grid...

SunSpec Modbus 700 Series DER Information Models are now APPROVED

Referenced in IEEE 1547-2018, the SunSpec Modbus 701-712 Series DER Information Models have officially been promoted from TEST status to APPROVED status, thus superseding the SunSpec Modbus 100 Series Models that were first introduced in 2009. Also now promoted from...

KEEP UP TO DATE

Keep up-to-date with SunSpec Alliance and industry news by signing up for the SunSpec newsletter.