SolarEdge

Role in our panels

How we use SolarEdge

SolarEdge SE7K-RWS and SE10K-RWS HD-Wave inverters enable SunSpec Modbus TCP communication via the SetApp mobile commissioning application. Once enabled under Communication > Modbus TCP > Enable in SetApp, the inverter exposes its register map on port 502 and can be read by any Modbus TCP client including KNX gateways and energy management systems. SetApp (iOS/Android) is mandatory for initial commissioning and Modbus TCP activation — without it, the inverter's communication interface cannot be configured. The SolarEdge SunSpec register map provides AC power at register 40083 (int16, watts), AC energy at register 40093 (uint32, watt-hours), and inverter status at register 40107. When a Smart Energy Meter is installed (Modbus ID 2 on the same TCP connection as the inverter at ID 1), grid power is available at register 40206 as a signed value — positive for import, negative for export. Scale factors are provided in adjacent registers per SunSpec standard, requiring a two-read process for calibrated values. KNX integration is achieved via the Intesis IN701KNX gateway, which acts as Modbus TCP master reading the SolarEdge register map and mapping values to KNX group addresses. The gateway is configured in MAPS software: add SolarEdge device at inverter IP, map AC Power (Reg 40083) to KNX GA 9/0/0 as DPT 13.010 (active energy signed), grid export from Smart Meter (Reg 40206) to GA 9/0/1 as DPT 13.010. KNX logic in the actuator or home automation system: if GA 9/0/1 export exceeds 2 kW, activate SG Ready State 3 on the heat pump via KNX relay output — enabling automatic solar surplus heating. SafeDC is a key safety feature of the SolarEdge optimiser architecture: each P-series power optimiser limits module output to 1V DC when the inverter is off or the grid is disconnected. This protects installers and emergency services working on DC wiring. From a monitoring perspective, power optimisers aggregate their data at the inverter level in Modbus — per-panel power, voltage, and current are only accessible via the SolarEdge monitoring portal API, not via local Modbus registers.

SolarEdge SE inverters support SunSpec Modbus TCP (port 502). Enable in SetApp under Communication > Modbus TCP > Enable. Intesis IN701KNX reads: AC Power (Reg 40083, W int16), AC Energy (Reg 40093, Wh uint32), Status (Reg 40107). Smart Energy Meter (Modbus ID 2, TCP): grid power signed (Reg 40206, W). Map to KNX GAs: GA 9/0/0 (PV power DPT 13.010), GA 9/0/1 (grid export signed DPT 13.010). KNX logic: export > 2kW → SG Ready State 3 on heat pump.