ABB XIO-08 - Page 119

XIO USER MANUAL | 2106424MNAA | 119
Default
port
User-
configurable
Port can
be
closed
Protocol
using the
port
Description
65535
No
Yes
Device Loader
TCP
Assigned to the device loader connections for
device software update.
PCCU requests this type of connection.
9696
No
Yes
SSH/TCP
Assigned to secure shell (SSH/SFTP) connections.
Third-party SSH/SFTP clients request these
connections.
5353
No
Yes
mDNS/UDP
Used by Auto Discovery service to detect Totalflow
services present on the network
IMPORTANT NOTE:
The TotalFlow/TCP and Modbus protocols are unsecured protocols, as such the
intended application should be assessed to ensure that these protocols are suitable before
implementation.
IMPORTANT NOTE:
For connections with user-configurable ports, use the default value or assign a
different port number
from the range of 1024 to 65534. Connections using non-default TCP ports are
handled by additional Totalflow/TCP communication or Modbus TCP applications
configured with
different TCP ports. For example, the figure below shows an additional Totalflow/TCP application
(named ControlGroup) with a different TCP port (10001).
Figure 8-1: Totalflow/TCP application instance with non-default TCP port
IMPORTANT NOTE:
TCP port numbers from 0 to 1023 are universally reserved for well-known
ports
. Never use these port numbers.