System overview
5.2 Configuration
S7-1500R/H redundant system
94 System Manual, 01/2024, A5E41814787-AF
The CPU runs the user program.
Additional features and functions of the CPU:
• Communication via Industrial Ethernet
• Communication via PROFINET IO
• Redundant mode
• HMI communication
• OPC UA server
• Web API of the Web server
• Integrated system diagnostics
• Integrated protection functions (access and know-how
protection)
cessors
The communications processors relieve the R/H CPUs of com-
munication tasks and enable further communication connec-
tions.
As of FW version V3.1, the S7-1500R/H redundant system
supports the CP 1543-1 communications processor (from FW
version V3.0):
• S7-1500R: max. 2 CPs per R-CPU with U-connector
• S7-1500H: max. 6 CPs per H-CPU with active backplane
bus
A U-connector is included in the scope of delivery for each CP.
PROFINET cable You connect the CPUs and the IO devices in a PROFINET ring
or PROFINET network using PROFINET cables.
ules (for S7-1500H)
You create 2 redundancy connections between the H-CPUs via
fiber-optic cables using a total of 4 synchronization modules
(2 in each H-CPU).
The following synchronization module versions can be or-
dered:
• Sync module 1 GB FO 10 m: for fiber-optic cables up to
10 m in length
• Sync module 1 GB FO 10 km: for fiber-optic cables up to
10 km in length
• Sync module 1 GB FO 40 km: for fiber-optic cables up to
40 km in length
Fiber-optic cable (for
S7-1500H)
They connect the 2 synchronization modules per CPU in pairs
via a fiber-optic cable. The following lengths of fiber-optic
cables can be ordered:
• 1 m
• 2 m
• 10 m
• Up to 40 km (you can find more information on longer
fiber-optic cables in the Industry Mall
(https://mall.industry.siemens.com)).
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