Siemens SIMATIC S7-1500 System Manual page 18

New properties/functions
What's new in the S7‑1500R/H redundant system System Manual, issue 05/2021 compared to
issue 11/2019
What's new?
New con­ CPU 1518HF-4 PN
tents
Influence changeover time of
switched S1 devices
MRP interconnection
Simulation of R/H-CPUs
18
What are the customer benefits?
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-function­
ality
• 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 comprehensive
functionality of SIMATIC are also available
for fail-safe applications.
• 3 PROFINET interfaces per CPU
As of FW version V2.9, you can influence the
changeover time between disconnection and
return of switched S1 devices after a fail­
ure/STOP of the primary CPU.
This function provides the following advant­
age:
• Optimization of the changeover time
between disconnection and return of
switched S1 devices
The MRP interconnection process is an
enhancement 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.
PLCSIM Advanced V4.0 supports the simulation
of the R/H-CPUs
• Virtual commissioning of machines with
R/H-CPUs in a plant
• Automated testing of the STEP 7 user pro­
gram
Simulation provides the following advantages:
• Early error detection and risk minimization
• Shorter commissioning time
• No hardware costs
Where can I find the informa­
tion?
As of System overview (Page 21)
section
PROFINET
(https://support.industry.
siemens.
com/cs/ww/en/view/49948856)
Function Manual
Redundancy (Page 62) section
S7-PLCSIM Advanced
(https://support.industry.
siemens.
com/cs/ww/en/view/109773484­
/en) function manual
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD