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Report
Port number (2) Link layer
(4) Transport layer
Function
Description
MRP
Media Redun‐
dancy Protocol
Not relevant (2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x88E3
(PROFINET)
PROFINET me‐
dium redundan‐
cy
MRP enables the control
of redundant routes
through a ring topology.
MRP uses the special
multicast MAC address:
xx-xx-xx-01-15-4E,
xx-xx-xx = Organization‐
ally Unique
Identifier
PTCP
Precision Trans‐
parent Clock Pro‐
tocol
Not relevant (2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x8892
(PROFINET)
PROFINET
send clock and
time synchroni‐
sation, based
on IEEE 1588
PTC enables a time de‐
lay measurement
between RJ45 ports and
therefore the send cycle
synchronization and time
synchronization.
PTCP uses the special
multicast MAC address:
xx-xx-xx-01-0E-CF,
xx-xx-xx = Organization‐
ally Unique Identifier
PROFINET IO
data
Not relevant (2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x8892
(PROFINET)
PROFINET Cy‐
clic IO data
transfer
The PROFINET IO tele‐
grams are used to cycli‐
cally transfer IO data be‐
tween the PROFINET IO
controller and IO devices
via Ethernet.
PROFINET Con‐
text Manager
34964
(4) UDP
PROFINET
connection less
RPC
The PROFINET context
manager provides an
endpoint mapper in order
to establish an applica‐
tion relationship (PROFI‐
NET AR).
Connection-oriented communication protocols
FTP
File transfer pro‐
tocol
21
(4) TCP
Server/
incoming
FTP can be used for the
first commissioning.
FTP can be activated/de‐
activated using parame‐
ter p8908.
DHCP
Dynamic Host
Configuration
Protocol
68
(4) UDP
Dynamic Host
Configuration
Protocol
Is used to query an IP ad‐
dress.
Is closed when delivered,
and is opened when se‐
lecting the DHCP mode.
http
Hypertext trans‐
fer protocol
80
(4) TCP
Hypertext
transfer proto‐
col
http is used for the com‐
munication with the CU-
internal web server.
Is open in the delivery
state and can be deacti‐
vated.
Security measures for SINAMICS
5.5 Communication services and used port numbers
Industrial Security
50
Configuration Manual, 08/2017, A5E36912609A