Janu
ary 201
9
170 Legrand PDU User Guide
XX is a two-digit number representing the device position as shown below.
Position
XX
Position
XX
Master device
00
Slave 8
08
Slave 1
01
Slave 9
09
Slave 2
02
Slave 10
10
Slave 3
03
Slave 11
11
Slave 4
04
Slave 12
12
Slave 5
05
Slave 13
13
Slave 6
06
Slave 14
14
Slave 7
07
Slave 15
15
For example, to access the Slave 4 device via Modbus/TCP, the port number is 50604. See
Port
Forwarding Examples
(on page 170) for further illustrations.
Tip: The full list of each cascaded device's port numbers can be retrieved from the web interface. Choose
Maintenance > Device Information > Port Forwarding.
Standard TCP/UDP ports:
The master device can be also accessed through standard TCP/UDP ports as listed in the following table.
Protocols
Port Numbers
HTTPS 443
HTTP 80
SSH 22
TELNET 23
SNMP 161
MODBUS 502
In the Port Forwarding mode, the cascaded device does NOT allow you to modify the standard TCP/UDP
port configuration, including HTTP, HTTPS, SSH, Telnet and Modbus/TCP.