Connecting Multi-Function Port (Rj-45) - Vertiv Liebert ITA2 Installer/User Manual

2.9.1 Connecting Multi-function Port (RJ-45)

The multi-function port is a standard RJ-45 connection that supports Modbus/Jbus protocol, and on
units with terminal-block battery connector, it connects Vertiv temperature and temperature/humidity
sensors. In addition, when connecting 2U battery cabinets, you must use this port to automatically detect
the number of battery strings and for temperature-compensated charging. You can configure the port
function using the Operation and Display panel.
2 Installation
Table 2.8 DB9F Pinout
Description
Pin No. Function
2 TX (Send data)
3 RX (Receive data)
5 Common
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