Supported Devices

Device Type	Modbus TCP (Ethernet)	RS485
Solar-Log 400e Gateway	✅	❌

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Configuration steps

Prerequisite: the Solar-Log 400e is powered and connected to the local network via Ethernet (DHCP by default).

1. Find the IP address
   Use your router’s DHCP list or a network scanner to locate the Solar-Log 400e on port 80.

2. Verify local API
   Open http://<IP-address>/pc.js?min0 in a browser.
   A plain-text JavaScript file should appear – this means the local API is enabled.

3. Add the device in Sofar

   • Go to Integrations → Add device.
   • Choose Solar-Log Gateway Local API.
   • Enter the IP address, keep the default port 80 and confirm.
   • The gateway and its attached inverters will be detected automatically.

4. (Optional) Static IP
   For stable operation, reserve the IP in your DHCP server or configure a static address in the Solar-Log web UI (Settings → Network).

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Metrics exposed

Key	Description	Unit
actualPowerTot_W	Instantaneous AC power of the PV plant	W
producedEnergyDeltaTot_Wh	Energy produced since previous read-out¹	Wh
importedEnergyDeltaTot_Wh	Imported energy (if the gateway measures it)	Wh
exportedEnergyDeltaTot_Wh	Exported energy (feed-in)	Wh

¹ The driver integrates actualPowerTot_W over time when absolute kWh counters are not available.

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Troubleshooting

• No data / status 302 – check that /pc.js?min0 returns HTTP 200 and contains the variables Serialnr, Pac, SLTyp, WRTyp.
  A redirect or login page indicates the local API is disabled.

• Power always zero – firmware < 2.1 may report Pac=0.
  Update to a recent firmware from the Solar-Log support portal.

• Multiple gateways – be sure each Solar-Log has a unique hostname or static IP to avoid discovery conflicts.

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Useful resources

• Solar-Log knowledge-base –
  [https://www.solar-log.com/en/support/faq]
• Modbus/TCP documentation – available in the “Downloads” section of the Solar-Log portal.