FAQ
TL;DR: 100 % (4/4) of forum users restored Solarman visibility after setting the RS-485 address to “01” and enabling STA mode; “Turn on STA mode, I thought you got the basics” [Elektroda, romulus73, #18606833; #18441878; #18606651].
Why it matters: One menu change and a correct Wi-Fi mode fix most Sofarsolar-to-Solarman connection failures.
Quick Facts
• RS-485 address required by Sofarsolar Wi-Fi logger: 01 [Elektroda, bodek256, post #18441878]
• Default inverter PIN: 0001 [Elektroda, bodek256, post #18463541]
• Solarman datalogger uploads every ~5 min (12 times hour) [Solarman Smart Manual, 2021]
• Reliable DNS settings: 8.8.8.8 / 8.8.4.4 [Elektroda, romulus73, post #18441424]
• @op.pl & @wp.pl emails may block activation links [Elektroda, grypol, #18606651; kefirr24, #18670777]
Why does the Solarman app show the logger but not the inverter?
The Wi-Fi module sees the logger by default, but it only lists the inverter when the RS-485 address equals “01.” Change the address in inverter menu → Settings → Set Address, then reboot; users confirmed this immediately revealed inverter data [Elektroda, bodek256, #18441878; grypol, #18606651].
How do I set the RS-485 address to “01” on a Sofarsolar KTL-X?
- Press “ESC” to enter the main menu on the inverter LCD.
- Navigate to item 8 ‘Set Address’. Enter code “01”.
- Confirm with “OK,” exit the menu; the Wi-Fi icon should light within 30 s [Elektroda, bodek256, post #18463408]
What PIN unlocks advanced inverter settings?
The factory PIN is 0001. Enter it when the inverter asks for a four-digit code [Elektroda, bodek256, post #18463541]
Which Wi-Fi mode should the logger use—AP or STA?
Use STA mode. AP mode is only for first-time configuration. “STA ENABLED” lets the module join your router and pass data upstream [Elektroda, romulus73, post #18606833]
My connection drops after a few minutes. How can I stabilise it?
Assign the logger a static IP, subnet 255.255.255.0, gateway 192.168.1.1, and set DNS to 8.8.8.8 or 8.8.4.4. Users reported stable links after this tweak [Elektroda, romulus73, #18441424; bodek256, #18441878].
I never receive the Solarman activation email—why?
Solarman servers reject some Polish domains such as @op.pl and @wp.pl. Change the account email to Gmail or Outlook and ask support to release the datalogger if it is locked to the inactive account [Elektroda, grypol, #18606651; kefirr24, #18670777].
Which router ports must be open for the logger?
Open TCP ports 10000-10010 and UDP 8899. Blocked high-number ports caused “offline” status for multiple users [Elektroda, usura01, post #19897762]
Logger shows “offline.” What checklist should I follow?
- Confirm STA mode is Enabled in 10.10.100.254 → WLAN.
- Verify RSSI ≥ -85 dBm; packets drop rapidly below this threshold [IEEE 802.11].
- Ping the logger IP from your LAN.
- Check Remote Server status; it must read “Connected.”
- Reboot inverter and logger if any step fails.
Can I bind one datalogger to multiple Solarman accounts?
No. The logger can belong to only one account at a time. Registering it under a second account returns “logger connected” and blocks data visibility [Elektroda, honorgie, post #19018257]
How do I delete an old plant or datalogger from the Solarman web portal?
In the portal, go to Plant → Settings → Delete Plant, then remove the datalogger. The inverter cannot be deleted until the plant entry is removed [Elektroda, wacek303, post #19128810]
Does RS-485 wiring affect Wi-Fi logging?
Yes. Shorted or mis-wired RS-485 lines prevent the logger from reading inverter frames, so the Solarman portal shows no power values even though Wi-Fi is online [Elektroda, grypol, post #18606651]
Quick 3-step Wi-Fi setup recap?
- Connect phone to logger’s AP, browse 10.10.100.254.
- Set STA mode, select your SSID, enter password.
- Save, reboot; Remote Server should show “Connected” within 2 minutes [Elektroda, Przemula1, post #18470820]
Edge case: What if my ISP blocks high ports?
If ports > 10 000 are closed, the logger stays offline despite LAN connectivity. Ask your ISP to open TCP 10000-10010 or use a 4G router; this resolved the issue for one user [Elektroda, usura01, post #19897762]
Is RS-485 master or slave on Sofarsolar inverters?
The inverter operates as an RS-485 slave; external devices poll it for data [Elektroda, FrankAB, post #19814040]
