Emerson Liebert PSA Line-Interactive UPS 500-1500VA User Manual

Liebert MultiLink is configured according to the method a computer uses to monitor the status of a 

UPS, through an SNMP card or by a direct cable connection to a serial or USB port on the computer.
Liebert MultiLink is designed to monitor any part of a network. Its functionality permits it to monitor 

any Liebert UPS that can be contacted via contact closure, USB cable, serial cable, an Ethernet or the 

Internet, but the software’s functionality does not require networked computers and UPSs.
Configure Liebert MultiLink according to the type of connection between the computer and UPS. The 

various methods are shown in Figures 1 through 3.

Figure 1 shows the simplest possible Liebert MultiLink installation. The software can be configured 

to monitor the UPS, and, if utility power fails or another problem arises, can notify the computer 

(MultiLink Agent) and personnel about the problem. In the event of a serious power problem, Liebert 

MultiLink can be configured to prompt the shutdown of the MultiLink Agent’s operating system.

Figure 2 shows the same type of direct cable connection to a computer (MultiLink Agent) on a 

network. With a contact closure, USB or serial connection, Liebert MultiLink can send notifications to 

all computers (MultiLink Clients) on a network. (These computers must be running Liebert 

MultiLink.) With a Liebert MultiLink Network Shutdown License installed on the MultiLink Agent 

computer, the software can send notifications to the MultiLink Client computers when needed.