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ARCTIV iPDU User Manual M-0010--Rev 2
The Modbus-RTU protocol is used here for the Star connection, The MODBUS
Serial Server connect to the IN port from the first PDU. Daisy chain cable
connect the first PDU OUT port to the IN port of the second PDU. Connect all
32 Slave unit by the same way (see Figure above) Serial connection can support
up to 32 PDUs together. See figure as below.
1)
Log on to Web interface of each PDU to configure the serial
communication code from the Modbus address code on Device
Manage page
2)
The Slave1 unit collects the data from the IN port through the RS 485
serial communication cable.