Monitoring and control systems
The RS485 line can be used to set up a line of communication (with
the communication protocol which can be set in "Aurora" or "ModBus")
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.
Any ABB monitoring devices must be wired to the RS485(1) port
For information on installation, compatibility and use please refer to the specic documentation
on the accessory components.
Procedure for RS485 connection to a monitoring system
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 communication line in the nal
element of the chain by switching the a12 or a 13 switch respectively on
the basis of the RS 485 (1) and RS 485 (2) line in the ON position.
The communication line must also be terminated on the rst element of the chain which
normally corresponds to the monitoring device.
It is recommended not to exceed a length of 1000m for the communication line.
The maximum number of inverters that can be connected to the same RS485 line is 62.
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