Liebert EM User Manual

The tabs at the top right of the Web interface window provide access to all the functions of the 

OpenComms EM device. Table 5 summarizes these functions and where to find more information.

The Web interface uses color coding to indicate the status of sensors connected to the unit, as shown 

in Table 6, to help you quickly identify sensors that require attention.
In EM PDU and vEM-14 controllers, the same color scheme is used for MP Advanced Power Strips 

connected to the unit.
These colors are used to display the sensor’s name, the current reading and the status of the sensor; 

the colors are also used in line graphs to indicate alarm thresholds. 

Summary

window

—

View current value & status of all 

connected devices

Sensors

window

Data

View all data for connected devices

Names

Change names of connected 

devices

Graph

Display data in graph format

(EM PDU & 

vEM-14 

controllers)

Power

window

—

View and set up MP Advanced 

Power Strips

Alerts

window

Email

Activate and configure automatic 

e-mail alerts

Modem

Activate and configure automatic 

pager alerts

SNMP Traps

Activate and configure automatic 

SNMP trap alerts

Security

window

—

Change password to Web interface; 

set up additional users, type of 

access, timeout after inactivity

Sys Info

window

Network

Connectivity

Configure network settings

SNMP

Information

Configure unit for SNMP

Data

Presentation

Change time intervals for updating 

sensor data, Web page refresh; 

change temperature units (°F / °C)

Serial Ports

(not used)

View or change settings for serial 

ports 1 and 2

Red

Red

Red

Critical state (High Critical, Low Critical, Critical)

Yellow

Yellow

Yellow

Warning state (High Warning, Low Warning)

Green

Green

—

Normal

Gray

Black

—

Not present (not connected to unit)