Riello UPS Sentinel Dual (High Power) (3.3 - 10 kVA) - Manual (Page 77)

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OMMUNICATION PORTS
The following communication ports are located at the back of the UPS (see UPS Views):
 Serial port, available with RS232 connector and USB connector.
NOTE: use of one connector automatically excludes the other.
 Expansion slots for additional COMMUNICATION SLOT interface cards.
RS232 and USB connectors
RS232 CONNECTOR USB CONNECTOR
1 2
3 4
PIN # SIGNAL PIN # SIGNAL
1 Contact closed: UPS locked * 1 VBUS
2 TXD 2 D-
3 RXD 3 D+
4 4 GND
5 GND
6
7 Interface power supply input +12Vdc
8 Contact closed: end of discharge prealarm *
9 Contact closed: operation from battery *
* O ptoisolated contact max. +30Vdc/10mA
Communication Slot
The UPS is provided with an expansion slot for optional
communication cards (see figure at the side) which enable the
device to dialog using the main communication standards.
Some examples:
Second RS232 port
Serial duplexer
Ethernet network agent with TCP/IP, HTTP and SNMP
protocol
RS232 port + RS485 with JBUS/MODBUS protocol
Signalling relay card
Refer to the manufacturer’s website for more information on
the accessories that are available.