New properties/functions
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
31
What's new in the S7-1500R/H redundant system System Manual, edition 05/2021 compared to
edition 11/2019
What's new? What are the customer benefits? Where can I find the infor-
tents
The CPU 1518HF-4 PN expands the R/H-CPU
portfolio with an HF-CPU. The CPU provides
the following advantages:
• Powerful H-CPU with integrated F-
functionality
• The integrated F-functionality processes
standard and safety programs. This allows
fail-safe data to be evaluated in the stand-
ard user program. Due to this integration,
the system benefits and the comprehen-
sive functionality of SIMATIC are also
available for fail-safe applications.
• 3 PROFINET interfaces per CPU
As of the System overview
(Page 63) section
Influencing switchover time
of switched S1 devices
As of FW version V2.9, you can influence the
switchover time between disconnection and
return of switched S1 devices after a fail-
ure/STOP of the primary CPU.
This function provides the following ad-
vantage:
• Optimization of the switchover time be-
tween disconnection and return of
switched S1 devices
The MRP interconnection process is an en-
hancement of MRP. MRP interconnection
allows the redundant coupling of two or more
rings with MRP in PROFINET networks.
MRP interconnection offers the following
advantages:
• There is no limit to the maximum number
of 50 devices in a ring when setting up
redundant network topologies.
• Monitoring of larger topologies with ring
redundancy.
Redundancy (Page 115) section
PLCSIM Advanced V4.0 supports the simula-
tion of the R/H-CPUs
• Virtual commissioning of machines with
R/H-CPUs in a plant
• Automated testing of the STEP 7 user
program
Simulation provides the following ad-
vantages:
• Early error detection and risk minimization
• Shorter commissioning time
• No hardware costs
(https://support.industry.sieme
ns.com/cs/ww/en/view/109773
484/en) Function Manual
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