11 Troubleshooting
SMA Solar Technology AG
Operating manualSTP50-40-BE-en-1594
Event number Message, cause and corrective measures
10251
[Interface]: communication status goes to [OK / Warning / Error /
Not connected]
The communication status to the network switch or DHCP server (router) has
changed. An additional error message may be displayed.
10252
[Interface]: communication disrupted
There is no valid signal on the network line.
Corrective measures:
• Ensure that with an Ethernet connection, the network cable and the
network connector are not damaged and that the network connectors are
correctly plugged.
• Ensure that the DHCP server (router) and any network switches are
signalizing correct operation.
10253
[Interface]: connection speed goes to [100Mbit / 10Mbit]
The data transfer rate has changed. The cause for the status [10 Mbit] can be
a defective plug, a defective cable or the pulling or plugging of the network
connector.
Corrective measures if the status is [10 Mbit]:
• Ensure that with an Ethernet connection, the network cable and the
network connector are not damaged and that the network connectors are
correctly plugged.
• Ensure that the DHCP server (router) and any network switches are
signalizing correct operation.
10254
[Interface]: duplex mode goes to [Full / Half]
The duplex mode (data transfer mode) has changed. The cause for the status
[Half] can be a defective plug, a defective cable or the pulling or plugging of
the network connector.
Corrective measures if the status is [Half]:
• Ensure that with an Ethernet connection, the network cable and the
network connector are not damaged and that the network connectors are
correctly plugged.
• Ensure that the DHCP server (router) and any network switches are
signalizing correct operation.
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