Riello UPS MultiCOM 301/302 - Manuale (Pagina 25)

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D ESCRIPTION
MultiCOM 301/302 is a device that allows monitoring of UPS and Transfer Switch (STS - ATS)
using standard communication protocol MODBUS and proprietary protocols.
MultiCOM 301 is an accessory external to the UPS which is connected to the UPS via serial cable.
MultiCOM 302 is an expansion card to be inserted in the slot of the UPS.
The two products have exactly the same features and the descriptions found in this manual apply
to both products (where not otherwise specified).
A -
SERIAL 2 port
B - Signalling LEDs:
a. GREEN: serial line SERIAL 1 active (1)
b. YELLOW: serial line SERIAL 2 active
(1)
C -
SERIAL 1 port
D - Power supply connector
E - Connector for connection to the UPS
(1) the LEDs, which normally are lit, flash at irregular intervals to indicate the flow of data on the
line.