Emerson MONITORING OpenComms Manuel D’Utilisation

The Management Information Base (MIB) is a formal document 

declaring the specifics of the information supported by the SNMP 

implementation. The administrator for the NMS (or other applications 

utilizing SNMP to communicate with the Liebert units will need the 

MIB in order to integrate the Liebert units into the monitoring sys-

tem.
The MIB files are contained on the CD that ships with the product.
Alternatively, the MIBs for the OpenComms Network Interface Card 

are available for download at 

. Navigate through 

Products, then Site Monitoring & Software and proceed to the Open-

Comms support information area. The RCF 1628 MIB can be down-

loaded at 

.

Status and alarm information can be queried by Web browsers via 

HTTP v1.1 (Hyper Text Transfer Protocol). The data is shown in an 

intuitive graphical format, akin to the unit’s front bezel controls. 

These browsers have been tested and are supported:

• Microsoft Internet Explorer, versions 5.x and later
• Limited Support for: Netscape 6.0 & Opera 5

Font size may need to be adjusted on your browser for optimal view-

ing.
With appropriate NMS software and configuration, the user on recep-

tion of SNMP traps may view HTTP pages in order to view the overall 

operating status of the unit – or HTTP may be used on its own to mon-

itor “on-demand” the unit operation. HTTP pages will automatically 

refresh (reload) every 20 seconds and is adjustable through the service 

terminal program.

See 5.0 - Modbus Communications and Connectivity for a com-

plete explanation of the Modbus slave.

The OpenComms Network card contains an on-board real time clock 

and watchdog circuitry. The card is self-monitoring and self-correct-

ing. However, a push button is provided to permit a manual system 

reset. The reset push button is labeled S1 on the interface card: press 

and hold it for 3 seconds before to releasing to initiate hardware reset.