Preface
PROFINET with STEP 7
4
Function Manual, 05/2021, A5E03444486-AL
What's new in the PROFINET Function Manual, Edition 05/2021 compared to Edition 11/2018
Function
What are the customer benefits?
Where can I find this information?
MRP interconnection The MRP interconnection procedure is an ex-
tension of MRP. MRP interconnection enables
the redundant coupling of two or more rings
with MRP in PROFINET networks. MRP inter-
connection offers you the following benefits:
There is no limit to the maximum number of 50
devices in a ring when setting up redundant
network topologies. Monitoring of larger to-
pologies with ring redundancy.
Section MRP interconnection (Page 188)
Section MRP interconnection with the redundant
Enable/disable the I-
device
You can use the "D_ACT_DP" instruction to
locally disable or enable the I-device function in
the user program of the I-device CPU.
Section Enabling/disabling I-device in the user
program of the I-device CPU (Page 144)
What's new in the PROFINET Function Manual, Edition 11/2019 compared to Edition 10/2018
Function
What are the customer benefits?
Where can I find this information?
Direct data exchange In the case of direct data exchange, an
S7-1500 CPU provides cyclic user data from the
I/O area to one or more partners.
The "Direct data exchange" function enables
deterministic, isochronous IO communication
between multiple S7-1500 CPUs.
Section Direct data exchange (Page 231)
Switched S1 device
The "Switched S1 device" function of the CPU
enables operation of standard IO devices in the
S7-1500R/H redundant system.
Section Switched S1 device (Page 296)
What's new in the PROFINET Function Manual, Edition 10/2018 compared to Edition 12/2017
This manual (version 10/2018) includes the following new functions compared to the
previous version (version 12/2017):
Function
Applications
Your benefits
PROFINET IO with the
redundant
S7-1500R/H system
In a PROFINET IO system with the redundant
S7-1500R/H system, the IO communication
continues even when one CPU fails.
The redundant S7-1500R/H system offers a high
degree of reliability and system availability. A
redundant configuration of the most important
automation components reduces the probability
of production downtimes and the consequences
of component failures.
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