EN
72
NOTE –
D
In case inverters are connected to the networking
switch with a ring topology is recommended to enable SPT
protocol on the switch (Spanning Tree Protocol SPT (IEEE
802.1D) is enabled by default on inverters.
• Daisy chain configuration
• Star configuration.
ATTENTION –
A
On each configuration the maximum length
of the cable must be 100m between inverter – inverter and
inverter – switch.
NOTE –
D
For further information on the Ethernet connection
refer to the Local Area Network standard IEEE802.3
NOTE –
D
No initial setup is required to start data transmission
to Aurora Vision.Internet connection is required to use all the
Aurora Vision remote functionalities.
NOTE –
D
Internet connection is required to use all the Aurora
Vision remote functionalities.
NOTE –
D
Please refer to Aurora Vision documents available
on FIMER website for further information how to get an
Aurora Vision account for remotely monitoring and managing
the installed solar assets.
5.11.4 Serial communication connection
(RS485-Slave mode)
NOTE –
D
Please note that automatic settings of network
parameters at turning on, embedded logging capability,
automatic logger-free transferring of data to Aurora Vision
Cloud and remote firmware update are provided over TCP/IP
(Ethernet and/or Wi-fi) bus only.
NOTE –
D
The use of the inverters over the RS485 line is
recommended in case of monitoring and controlling by using
third party RS485 control systems.
NOTE –
D
By default the RS485 port
(38)
is set as Slave mode.
In case the port was set as “Master mode” it must configured
through the Web User Interface (refer to
section) to use the RS485 as a serial communication
line.
NOTE –
D
RS485 line supports Modbus/RTU SUNSPEC
compliant Modbus protocol.
The RS-485 port can be used to set up a line of communication
which, when connected to a monitoring device, enables the
operation of the photovoltaic system to be kept under control.
Depending on the device used, monitoring can be local or remote.
The RS-485 serial communication line is available on the
communication and control board
(28)
with two terminal blocks
(38)
for each serial line signal (+T/R, -T/R and RTN) so as to be able
to make a daisy-chain connection (“in-out”) of multiple inverters.
J2
X1
X2
S5
S4
J7
J1
J5
J6
1
2
1
8
7
4
3
2
35
38
485+
RTN
485-
485+
RTN
485-
NOTE –
D
For long distance connections is necessary to use
a shielded twisted pair cable with characteristic impedance of
Z0=120 Ohm as shown on the following table:
Signal
Symbol
+485
+485
-485
-485
RTN
RTN
SHIELD
SHIELD
Positive
data
+ 485
Negative
data
- 485
Reference
RTN
Shield
SHIELD
ATTENTION –
A
Shield continuity must be provided along the
communication line and must be grounded in a single point.
RTN
485+
485-
SHIELD
TO MONITORING
SYSTEM
NOTE –
D
It is the installer’s responsibility to evaluate the
use of an additional overvoltage protective devices on the
communication line.
NOTE –
D
For information on installation, compatibility
and use of monitoring system, please refer to the specific
documentation on the accessory components.
Connect all the units of the RS485 chain in accordance with
the daisy-chain model observing the correspondence between
the signals, and activate the termination resistance of the
