Table 8-12. Modbus Led - Advanced Energy AE 600 User Manual

Table 8‑11. Status LED (Continued)
LED Flash Code
Color
Short-Short-
Long
Table 8‑12. Modbus LED
LED Flash Code
Color
Green Short (1/8
sec.)
Long (1/2
sec.)
Short and long Communication occurring on a Modbus
570-1001791-05A
Unit Status / Description
Network connection fault. The inverter
cannot post data to the AE database server.
The status LED may indicate normal
operation before this occurs. This can
happen in the following circumstances:
• Network cable is not connected
• Network does not have a DHCP server
or the DHCP server did not provide a
valid IP address to the inverter
• AE server is down for maintenance
• Any other network problem that does
not allow data to post to the AE server
Unit Status / Description
Enables the installer to troubleshoot the
system by verifying that communications
are occurring on the network, indicating the
following:
• If the inverter is connected as a slave
device, the LED flashes quickly
whenever there is activity on the
network
• Modbus network commands occurring
but are not addressed to this specific
inverter
Inverter sees and responds to a Modbus
master request message that is addressed to
this specific inverter.
network that contains multiple Modbus
slave devices.
Troubleshooting and Solar Energy Technical Support
Advanced Energy® AE 500 Inverter
Action
• Verify network
cable is
connected.
• Verify the IP
address is valid.
Action
• Check the Modbus
address switches
and make sure
they correspond to
the address
programmed into
the Modbus
master.
• Confirm that the
baud rate and
other
communication
parameters of the
Modbus master
are set correctly.
None
None
8‑17