Siemens SINAMICS G220 - Media Redundancy

Protocol Port
number
Layer
(2) Link layer
(4) Transport layer
Description
PTCP
Precision Trans‐
parent Clock
Protocol
not rele‐
vant
(2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x8892 (PRO‐
FINET)
PROFINET send clock and time synchronization, based on IEEE 1588
PTCP enables the send clock synchronization and time synchronization
between RJ45 ports required for IRT operation.
PTCP uses the special Multicast MAC address:
xx-xx-xx-01-0E-CF,
xx-xx-xx = Organizationally Unique Identi󹪝er
PROFINET IO da‐
ta
not rele‐
vant
(2) Ethernet II and
IEEE 802.1Q and
Ethertype 0x8892 (PRO‐
FINET)
PROFINET cyclic IO data transfer
The PROFINET IO telegrams transfer process data cyclically between 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 application relationship (PROFINET AR).
14.4.3.2 Media redundancy
Overview
The converter supports media redundancy based on MRP (Media Redundancy Protocol). Media
redundancy is a function to increase system availability through redundant communication
paths.
MRP can be expanded to MRPD (Media Redundancy with Planned Duplication of frames).
Requirement
The following preconditions apply regarding media redundancy:
• PROFINET as ring topology with redundancy manager
• Each device in the ring topology supports MRP or MRPD
• Maximum of 50 devices for each ring topology
• MRPD requires a suitable controller.
• MRPD requires that a topology is con󹪝gured in the controller.
Functions
14.4PROFINET communication
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 329