Configuring The Modbus Tcp Port (Pac3220 Only) - Siemens SENTRON PAC3120 Manual

8.4

Configuring the Modbus TCP port (PAC3220 only)

This function is only available on the PAC3220.
Ports are communication channels which make it possible to access a Modbus-capable
device via a network. Standard IP ports like port 502 are often tested by port scanners. If an
open port is discovered by an attacker, it can be used to attack the device.
For this reason, the PAC3220 allows the Modbus TCP port to be configured manually.
The IP filter can be activated on the device in the "Communication" submenu of the
"Settings" menu.
PAC3120 and PAC3220
Equipment Manual, 10/2019, L1V30425208F-01
8.4 Configuring the Modbus TCP port (PAC3220 only)
Security features
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