Modbus
Problem Cause and corrective measure
The ClusterController cannot be ac-
cessed by the Modbus client.
The required Modbus server is not activated.
Corrective measures:
• Activate the required Modbus server (see
Section12.1, page60).
The correct IP address for the ClusterController is not set
in the Modbus client.
Corrective measures:
• Read off the IP address of ClusterController (see
Section10.4.1, page54).
• Ensure that the correct IP address for the
ClusterController is set in the Modbus client (see
manual from manufacturer).
The Modbus profile contains mea-
sured values that are not supported by
the SMA device.
The Modbus configuration may be incorrect.
Corrective measures:
• Check the Modbus configuration using the
assignment tables and adjust if required (see the
Technical Description "
"SMACLUSTERCONTROLLER Modbus® Interface"
").
The ClusterController does not re-
spond within the response time speci-
fied by the Modbus client.
The Modbus configuration may be incorrect.
Corrective measures:
• Check the Modbus configuration using the
assignment tables and adjust if required (see the
Technical Description "
"SMACLUSTERCONTROLLER Modbus® Interface"
").
The ClusterController does not trans-
mit a value specified in the Modbus
profile to the devices in the system.
The Modbus configuration may be incorrect.
Corrective measures:
• Check the Modbus configuration using the
assignment tables and adjust if required (see the
Technical Description "
"SMACLUSTERCONTROLLER Modbus® Interface"
").
18 Troubleshooting
SMA Solar Technology AG
User ManualClusterController-BA-en-15106