Modbus TCP
SunSpec Model 64101 — Eltek Inverter Extension
SunSpec
Overview
The SunSpec Model 64101 Eltek Inverter Extension is a vendor-specific SunSpec block appended to the standard inverter models on Eltek grid-tied PV inverters. Over Modbus TCP, this template reads the country grid code, AC feeding phase, active power derating (APD) method and reference, and reactive power support (RPS) method, reactive power reference, and cos-phi reference. These registers expose the grid-compliance configuration layer that sits above basic AC output data, giving installers a single-read view of how the inverter is set to interact with local grid codes and utility requirements.
Use cases
- Verify that the active country code matches the installation site after commissioning or a firmware update.
- Monitor the active power derating method and reference to confirm APD settings align with grid operator requirements.
- Track the reactive power support method over time to detect any unintended configuration changes.
