SMA CLUSTER CONTROLLER User Manual
Page 110
Modbus
Problem
Cause and corrective measure
The Cluster Controller cannot be ac-
cessed by the Modbus client.
The required Modbus server is not activated.
Corrective measures:
• Activate the required Modbus server (see
The correct IP address for the Cluster Controller is not set
in the Modbus client.
Corrective measures:
• Read off the IP address of Cluster Controller (see
• Ensure that the correct IP address for the
Cluster Controller 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 "SMA CLUSTER CONTROLLER
Modbus® Interface").
The Cluster Controller 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 "SMA CLUSTER CONTROLLER
Modbus® Interface").
The Cluster Controller 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 "SMA CLUSTER CONTROLLER
Modbus® Interface").
18 Troubleshooting
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