ABB UNO-DM-3.3-TL-PLUS Product Manual page 121

In order to use the "Host Name" as an alternative to the dynamic IP address, the Wi-Fi router
to which the board is connected (when operating in "Station Mode") must provide the Domain
Name System (DNS) service (contact the network administrator for further information regar-
ding the presence or absence of the DNS service in the Wi-Fi router or how to enable it). In this
way, even if the IP address assigned to the inverter should change over time, (dynamic IP), it
will always be possible to use the same "Host Name" which will remain unchanged over time.
The IP address assigned may vary for reasons connected to the wireless home router setup
(for example, a very brief DHCP lease time). If verification of the address is required, it is
usually possible to obtain the client list (and the corresponding IP addresses) from the wire-
less router administration panel.
The most common causes of losing connectivity might be: different wireless network pas-
sword, faulty or unreachable router, replacement of router (different SSID) without the neces-
sary setting updates.
Modbus TCP
In the Modbus TCP sub-menu it's possible to enable exchanging of
data with third party monitoring and control systems over wireless
channel in compliance with Sunspec register map, by setting "ON" the
"Modbus TCP Server" parameter.
By changing "Modbus Power Control" parameter settings to "OFF" only
reading register is enabled.
Debug Settings
In the Debug Settings sub-menu it's possible to enable or disable the
Debugging access for ABB Service purposes.
If the inverter loses the connection with the home wireless
network (and therefore, loses the internet connection), it
will once again enable its own access point.
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7 - Operation