Emerson LIEBERT GXT5000R-208 - Manual (Page 23)

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SERIAL COMMUNICATIONS
The UPStationGXT5000R-208 has a DB-9 serial port male connector on the rear of the unit.
Contact closure signals are not provided on this connector. Serial signals are provided on this
port and are assigned as follows:
This port is not directly compatible with the Liebert M3LS9P9S serial communication cable
supplied with the UPS. A DB-9 adapter must be used to provide a standard Liebert UPS com-
munication port.
A DB-9 adapter is included in the UPS accessory box. Attach the adapter to the UPS using the
captive screws.
The DB-9 adapter will redirect the communication signals and provide a female DB-9 commu-
nication port suitable for connection to the Liebert M3LS9P9S serial communication.
Serial Cable
Connect the DB-9 adapter to your computer serial port using the Liebert M3LS9P9S serial
communication cable.
PIN DESCRIPTION
1,4,6,7,8,9 Do not connect
2 UPS RxD (typical RS-232 levels)
3 UPS TxD (typical RS-232 levels)
5 Common
REAR PANEL MALE DB-9
DB-9 Adapter
FEMALE FEMALE
2 2
3 3
5 5
Connects to Serial Cable Connects to UPS
M3LS9P9S Cable - 9 Pin UPS to 9 Pin Serial Port for Serial Communications
MALE FEMALE
2 2
3 3
5 5
Connects to DB-9 Signal Converter Connects to Computer Serial Port