Siemens SIMATIC S7-1500 System Manual page 33

Configuration PROFINET ring with S2 devices, switched S1 devices •
versions
Configuration • In the PROFINET ring: Max. 50 PROFINET
limits devices, including R-CPUs (max. 16 PROFINET
devices recommended)
• In the PROFINET ring and separated with
switches (additional line topology): maximum
of 64 IO devices
Comparison of S7-1500 standard system and S7-1500R/H
The table below sets out the key features of comparable CPUs of the S7‑1500 automation
system and of the S7‑1500R/H redundant system.
Table 4-2 S7-1500 and S7-1500R/H comparison
Support for central I/O
Configuration control
Web server
CPU redundancy
System redundancy S2
System redundancy R1
S1 device
Isochronous mode
Shared Device
Operation as I-device
IRT
MRP
MRPD
OPC UA
Motion Control
1) Only with CPU 1517H-3 PN
2) As switched S1 device
For personal, environmental or investment protection, you will need fail-safe automation systems (F-systems).
3)
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
S7-1500R
CPU 1513R‑1 PN
CPU 1515R‑2 PN
S7-1500
CPU 1513‑1 PN CPU 1518F-4 PN/DP
CPU 1515‑2 PN
CPU 1517‑3 PN/DP
✓
✓
✓
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✓
✓
✓
✓
✓
✓
✓
✓
✓
4.1 What is the S7-1500R/H redundant system?
CPU 1517H‑3 PN
CPU 1518HF-4 PN
PROFINET networks with S2 devices, switched
S1 devices
• PROFINET networks with R1 devices
• PROFINET networks with R1 devices, S2 devices,
switched S1 devices in a combined topology
• Configuration without additional devices
• PROFINET ring: Max. 50 PROFINET devices
(including H-CPUs)
• PROFINET network (ring, line or combined topo­
logy): maximum of 256 IO devices
CPU 1513R‑1 PN
CPU 1515R‑2 PN
CPU 1517H‑3 PN
✓ ---
✓ ---
✓ ---
--- ✓
--- ✓
1)
--- ✓
2)
✓ ✓
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System overview
S7-1500H
S7-1500R/H
CPU 1518HF-4 PN
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---
---
✓
✓
✓
2)
✓
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✓
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