Operation
6.13 Communication services and used port numbers
Converter cabinet units
412
Operating Instructions, 07/2016, A5E03347396A
Layers and protocols
Report
Port number
(2) Link layer
(4) Transport layer
Function
Description
PROFINET protocols
DCP
Discovery and
configuration
protocol
Not relevant
(2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x8892
(PROFINET)
Accessible
nodes,
PROFINET
Discovery and
configuration
DCP is used by PROFINET to determine
PROFINET devices and to make basic
settings.
DCP uses the special multicast MAC ad-
dress:
xx-xx-xx-01-0E-CF,
xx-xx-xx = Organizationally Unique Identi-
fier
LLDP
Link Layer
Discovery pro-
tocol
Not relevant
(2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x88CC
(PROFINET)
PROFINET
Link Layer
Discovery pro-
tocol
LLDP is used by PROFINET to determine
and manage neighborhood relationships
between PROFINET devices.
LLDP uses the special multicast MAC
address:
01-80-C2-00-00-0E
MRP
Media Redun-
dancy Protocol
Not relevant
(2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x88E3
(PROFINET)
PROFINET
medium redun-
dancy
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 = Organizationally Unique
Identifier
PTCP
Precision
Transparent
Clock Protocol
Not relevant
(2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x8892
(PROFINET)
PROFINET
send clock and
time synchroni-
zation, based
on IEEE 1588
PTC allows a time delay measurements to
be made between RJ45 ports – therefore
send cycle synchronization and time syn-
chronization.
PTCP uses the special multicast MAC
address:
xx-xx-xx-01-0E-CF,
xx-xx-xx = Organizationally Unique Identi-
fier
PROFINET IO
data
Not relevant
(2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x8892
(PROFINET)
PROFINET
Cyclic IO data
transfer
The PROFINET IO telegrams are used to
cyclically transfer I/O data between the
PROFINET IO controller and IO devices
via Ethernet.
PROFINET
Context Man-
ager
34964
(4) UDP
PROFINET
connection less
RPC
The PROFINET context manager provides
an endpoint mapper in order to establish
an application relationship (PROFINET
AR).
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