Enable Communication Protocols; Enable Protocols; Enable Modbus Protocol - Vertiv Liebert IntelliSlot Unity Card Installer And User Manual

3 ENABLE COMMUNICATION PROTOCOLS

The Unity card communicates with equipment and 3rd-party systems over the following protocols:
• BACnet IP
• BACnet MSTP
• Modbus TCP
• Modbus RTU
• SNMP
• YDN23
NOTE: No more than two protocols may be enabled on one card. Only one version of BACnet may be
selected: BACnet IP or BACnet MSTP. Only one version of Modbus may be selected: Modbus TCP or
Modbus RTU. Only one of the chosen protocols can use the 485 port. Choosing two 485 protocols will
cause conflicts.
NOTE: Some building-management systems (BMS) can be configured to send continuous updates for
device setpoints, usually setting the same value. The BMS should be configured to send, on a
sustained average, no more than two writes per second to the device. This will allow the device to catch
up after a burst of updates when necessary, while allowing other communication with the device to
proceed.

3.1 Enable Protocols

Protocols may be enabled after a card is installed and configured for basic network connectivity. After a
protocol is enabled, it must be configured, which requires opening the folder for the desired protocol
(Communications tab > Protocols > (protocol to configure).
To enable two communication protocols:
1. On the Communications tab, select Protocols.
2. Click Edit and enter the administrator user name and password.
3. Click to check the box next to the protocols to use.
• Only two protocols may be enabled.
• Only one of the two can use the 485 port.
4. Click Save to confirm the changes or Cancel to discard them.
5. Configure the protocols selected. See
6. Restart the card:
a. On the Communications tab, click Support.
b. Click Enable.
c. Click Restart.

3.1.1 Enable Modbus Protocol

Protocols may be enabled after a card has been installed and configured.
1. On the Communications tab, select Protocols > Modbus.
2. Click Edit and enter a user name and password.
3 Enable Communication Protocols
Editing the Unity Card Configuration on page 29.
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