SolarEdge SE5000H-AU Installation Manual page 70

69 Troubleshooting Communication
Troubleshooting RS485 Communication
If the message RS485 Master Not Found appears in the Status screen, check the
connections to the master device and fix if required.
If after slave detection the number of slaves displayed for the master under RS485-
2 Conf è Slave Detect is lower than the actual number of slaves, refer to the
following application note to identify missing slaves and troubleshoot connectivity
problems: https://www.solaredge.com/sites/default/files/troubleshooting_
undetected_RS485_devices.pdf
Additional Troubleshooting
1. Check that the modem or hub/router is functioning properly.
2. Check that the connection to the internal connector on the communication board is
properly done.
3. Check that the selected communication option is properly configured.
4. Use a method independent of the SolarEdge device to check whether the network
and modem are operating properly. For example, connect a laptop to the Ethernet
router and connect to the Internet.
5. Check whether a firewall or another type of network filter is blocking
communication.
EV Charging Single Phase Inverter MAN-01-00629-1.2