Follow these steps in order. Use the detailed sections for model-specific settings and the complete object reference.
1 Prepare the installation
Have the gateway, KNX bus connection, 12-30 VDC auxiliary supply, network connection, ETS application and inverter configuration access ready. Check compatibility and firmware in Sections 3 and 10.
2 Connect and power the gateway
Connect KNX at the top. Connect auxiliary power and RJ45 Ethernet at the bottom. Connect the equipment to the same local network. The green Network LED confirms the Ethernet link; see Section 3.
3 Configure the inverter connection
Enable Modbus TCP or configure the required inverter connection using Section 4. For SUN2000L, use the reverse connection to the gateway in Listen mode. For EMMA, use its WAN Ethernet port and configure the gateway as the client IP.
4 Set the gateway network and Modbus link
Open 192.168.1.51 from a laptop on a compatible network and assign an appropriate fixed gateway IP address. Use the model-specific connection settings in Section 4.
5 Configure the KNX device in ETS
Assign a free physical address. Set Inverter model to 0 for SUN2000L; 4 for SUN2000; 21 for EMMA. Set the AC network, applicable PV circuits, refresh rate and available equipment. Leave Device Options empty. See Sections 5 and 6.
6 Link group addresses and download
Assign group addresses to the required objects. Press P when ETS requires programming mode and perform a full application download for initial commissioning. See Section 5.
7 Validate data and enable logic
Check the Connected LED and Module status (GO 1 = 0). Read firmware (GO 2), wait for the polling interval and compare live values with the inverter. Check power directions and optional equipment before enabling logic. See Section 7.
Commissioning is complete when
The network and inverter links are established, the ETS download succeeds, and the required group objects return plausible values for the installed equipment.