Troubleshooting - SMA SB 3000TL-US-22 Installation Manual

SMA America, LLC

8 Troubleshooting

Corrective measures for Modbus errors
Corrective measures for Modbus errors can be found in the technical description
®
"SMA Modbus
Problem
The Speedwire/
Webconnect data
module cannot be
accessed.
Installation Manual
Interface" or "SunSpec
Cause and corrective measure
Possibly, there is no Speedwire connection.
Corrective measures:
• Ensure that all network cable plugs are inserted and locked.
• Ensure that all inverters in the PV system are in operation.
• Make sure that the PV system router is switched on.
• Make sure that the ribbon cable plug of the Speedwire/
Webconnect data module is correctly plugged into the center
connector strip in the inverter.
Possibly, the Speedwire/ Webconnect data module does not have a valid
IP address.
Corrective measures:
• Make sure DHCP is enabled for the router
or
• Use SMA Connection Assist or Sunny Explorer to assign an
appropriate static IP address to the Speedwire/Webconnect data
module. You can obtain the Sunny Explorer and SMA Connection
Assist software free of charge from the download area at
www.SMA-Solar.com.
Possibly, the firewall has not been configured correctly.
Corrective measures:
• Enable ports 3478 and 9523 in the firewall (see firewall manual).
Possibly, the UDP ports in the router are not open for outgoing
connections.
Corrective measures:
• Open the UDP ports > 1024 in the router for outgoing connections.
Possibly, the IP filter has not been configured correctly.
Corrective measures:
• Adjust IP filter settings (see router manual).
® ®
Modbus Interface".
SWWEBCONDM-IA-US_en-14
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