Siemens Simatic S7-1500 - Page 78

System overview
5.1 What is the S7-1500R/H redundant system?
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
77
S7-1500R
S7-1500H
Configuration
versions
PROFINET ring with S2 devices, switched S1 de-
vices
• PROFINET networks with S2 devices, switched
S1 devices
• PROFINET networks with R1 devices
• PROFINET networks with R1 devices, S2 devic-
es, switched S1 devices in a combined topolo-
gy
• Configuration without additional devices
Configuration
limits
• In the PROFINET ring: Max. 50 PROFINET de-
vices, including R-CPUs (max. 16 PROFINET
devices recommended)
• In the PROFINET ring and separated with
switches (additional line topology): maximum
of 64 IO devices
• PROFINET ring: Max. 50 PROFINET devices
(including H-CPUs)
• PROFINET network (ring, line or combined
topology): maximum of 256 IO devices
Central modules
• Maximum 2 communications processors
CP 1543-1 per R-CPU via U-connector
• Maximum 2 system power supply modules per
R-CPU via U-connector
• Maximum 6 communications processors
CP 1543-1 per H-CPU via active backplane bus
• Maximum 2 system power supply modules per
H-CPU via active backplane bus
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 5- 2 S7-1500 and S7-1500R/H comparison
S7-1500
S7-1500R/H
CPU 1513-1 PN
CPU 1515-2 PN
CPU 1517-3 PN/DP
CPU 1518F-4
PN/DP
CPU 1513R-1 PN
CPU 1515R-2 PN
CPU 1517H-3 PN
CPU 1518HF-4 PN
Support for central I/O
✓
✓
Only PS, CP 1543-1
Only PS, CP 1543-1
Configuration control
✓
✓
---
---
Web server
✓
✓
✓
1)
✓
1)
CPU redundancy
---
---
✓
✓
System redundancy S2
---
---
✓
✓
System redundancy R1
---
---
✓
2)
✓
S1 device
✓
✓
✓
3)
✓
3)
Isochronous mode
✓
✓
---
---
Shared Device
✓
✓
---
---
Operation as I-device
✓
✓
---
---
IRT
✓
✓
---
---
MRP
✓
✓
✓
✓
MRPD
✓
✓
---
---
OPC UA server
✓
✓
✓
✓