MODULAR SUNWAY TG
TE OD
INSTALLATION GUIDE
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Rev. 03
– 01/06//2018
Figure 39: Location of the Data Logger option board
Each Data Logger board is capable of monitoring up to a maximum of 40 devices which are multidrop
connected on the RS485 bus. On the bus the Data Logger operates acts as Modbus Master while the other
devices (typically the Smart String Boxes) act as Modbus Slaves.
Should Santerno devices, such as Smart String Boxes, be multidrop connected, for user ease it is possible
to use pre-set log configurations. Using these settings, the maximum number of devices which can be
monitored is 15 units.
It is always possible to increase the number of units monitored by reducing the number of variables present
in each log.
For further details, please refer to the Data Logger's Programming Guide.
6.7.1. Connection to the communications ports
The following communications ports are made available by the inverter:
•
One Ethernet port for each DC module for the remote monitoring of the equipment;
•
One optional RS-485 port for each DC module reserved to the String Box monitoring
6.7.1.1. Ethernet Port
Connection to the Ethernet port is to be made directly to the data logger board. Figure 38 shows the position
of the Ethernet port on the ES851 board. Figure 40 and Figure 41 show the Ethernet cable path inside the
DC section.
