Vertiv Liebert EXM2 - Om M Unication; SNMP Protocol Communication; Modbus Protocol Communication; Dry Contact Communication

10 Communication
The UPS supports SNMP protocol communication, Modbus protocol communication, and dry contact communication. This
chapter provides information relevant to these types of communication.
10.1 SNMP Protocol Communication
If you need to monitor the UPS through network, you may select the UNITY card or SIC card provided by Vertiv. These two
cards support SNMP protocol.
Both the UNITY card and SIC card are network management cards which make the UPS an IOT device. IRM series sensor can
also be connected to these cards to provide environmental monitoring function. When the intelligent equipment generates an
alarm, the UNITY card and SIC card can notify the user by recording the log, sending trap information, and sending a mail.
The UNITY card and SIC card provide three approaches for you to monitor your intelligent equipment and equipment room
environment:
• Web browser: You can use Web browser to monitor your intelligent equipment and equipment room environment
through the Web server function provided by the UNITY card or SIC card.
• Network management system (NMS): You can use NMS to monitor your intelligent equipment and equipment
room environment through the SNMP function provided by the UNITY card or SIC card.
• RDU-A: The network management software for equipment room power and environment. You can use RDU-A to
monitor your intelligent equipment and equipment room environment through the TCP/IP interface provided by
the SIC card.
The SIC card can also work with the Network server shutdown software developed by Vertiv to provide automatic safe
shutdown function for your computer installed with Network Shutdown, so as to avoid data loss.
The UNITY card should be installed in the Intellislot port (see Figure 4.4 on page46) in the UPS.
For further description of the IS-UNITY card, refer to Liebert® IntelliSlot Unity Card User Manual–Web, SNMP, Modbus,
BACnet, YDN23 in accessory.
For the installation and setting information of the SIC card, refer to Site Interface Web/SNMP Agent Card User Manual for
details.
10.2 Modbus Protocol Communication
The Modbus protocol communication is supported by UNITY card and SIC card.
10.3 Dry Contact Communication
The UPS provides the following two dry contact communication approaches:
• IS-Relay card
• Dry contact port
10.3.1 Communication Through IS-Relay Card
The UPS provides an IS-Relay card for the user to use dry contact signals to monitor the UPS. The IS-Relay card should be
installed in an Intellislot port (see Figure 4.4 on page46) of the communication box in the cabinet. For the installation and use
of the IS-Relay card, refer to Liebert® IntelliSlot IS-Relay Card User Manual.
10 Communication
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Vertiv™ Liebert® EXM2 UPS User Manual