Download Technical Description - SunSpec® Modbus® Interface

SMA America, LLC
Troubleshooting
6 Troubleshooting
Problem
Cause and corrective measure
The SMA device with Speedwire interface is not available
for the Modbus client.
The necessary Modbus server in the SMA device with Speedwire
interface may not be enabled.
Corrective measures:
• Ensure that the required Modbus server is enabled (see
Section 4 "Commissioning and Configuration", page 16)
The correct IP address for the SMA device with Speedwire interface may not be set in the Modbus client.
Corrective measures:
• Read off the IP address of the SMA device with Speedwire
interface (see router manual).
• Ensure that the correct IP address for the SMA device with
Speedwire interface is set in the Modbus client (see the
Modbus client manufacturer manual).
The firewall may not be set correctly.
Corrective measures:
• Enable port 502 in the firewall (see firewall manual).
The SMA device with SpeedThe Modbus server of the SMA device may be currently overwire interface does not send a loaded.
reply within the response time Corrective measures:
specified by the Modbus client.
• Extend the response time set in the Modbus client successively by one second respectively.
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SunSpec_Modbus-TB-US-en-14
Technical Description