Vertiv Liebert iCOM - 8.2 Communication Setup with Embedded Unity; 8.2.1 Connecting to the BMS

8.2 Communication Setup with Embedded Unity
The following sections describe the configuration options for embedded Unity function including Modbus, BACnet, SNMP,
SMS, SMTP, and HTTP communication.
NOTE: The Unity configuration is also accessible through the Unity web interface. For details on accessing and using
the web interface, refer to the Liebert® IntelliSlot™ Unity Card Installer/User Guide, available at www.vertiv.com.
IS-UNITY setup includes the following options to configure Unity function and communication:
• Connection
• Connecting to the BMS below
• Embedded Unity User and Password on page124
• Troubleshooting Unity Connection and Set Up on the facing page
• Configuration
• System Configuration on page124
• Local Users Configuration on page126
• Network Configuration on page127
• Web Server Configuration on page129
• Remote Services Configuration on page132
• Velocity Protocol Configuration on page135
• Messaging Configuration on page136
• Protocols
• BACnet Protocol Setup on page141
• Modbus Protocol Setup on page144
• SNMP Protocol Setup on page146
• Unity Status Readings on page150
• Unity Support Information on page151
8.2.1 Connecting to the BMS
The embedded Unity software resides on the Vertiv™ Liebert® iCOM™ control board. There are two methods of connecting to
a BMS, via Ethernet or RS-485.
For a network connection, connect the Ethernet cable from the BMS to P74 on the Liebert® iCOM™ control board. 8.2.1 above
, shows the connector location.
For an RS-485 connection, connect the serial cable form the BMS to TB3 on the Liebert® iCOM™ control board. Pin1 is the
positive terminal on the right in on the facing page .
If the optional RS-485 expansion board is purchased, TB1 on the expansion board is used for BACnet MSTP or MODBUS RTU
and TB3 on the Liebert® iCOM™ board directly to a Sitelink/Sitescan system.
Please see Configuring BMS Communication with Embedded Unity on page117
8 External Monitoring andBuilding ManagementSystems
120
Vertiv™ Liebert® iCOM™Installer/User Guide