S7-1500 R/H-Cpus; Overview Of The Cpu Technical Specifications - Siemens Simatic S7-1500R System Manual

2.3

S7-1500 R/H-CPUs

The S7-1500R/H redundant system tolerates the failure of one of the two R- or H-CPUs in
the PROFINET ring. If the primary CPU fails, the backup CPU takes over control of the
process as the new primary CPU at the point of the interruption.
All relevant data is permanently synchronized between the CPUs over the redundancy
connections between primary CPU and backup CPU.
The primary CPU and the backup CPU execute the user program in parallel.
The display of the CPU shows you the control and status information in various menus.
Quick access to diagnostic alarms minimizes plant downtimes in the event of a service call.
For effective commissioning and fast optimization of drives and controls, the CPUs support
trace functions for all CPU tags.
2.3.1

Overview of the CPU technical specifications

The table below sets out the main technical specifications for the S7-1500 R/H CPUs.
Table 2- 4 Overview of the R/H-CPU technical specifications
Data work-memory, max.
Code work-memory, max.
Plug-in load memory (SIMATIC memory
card), max.
I/O address area, max.
PROFINET IO interfaces
PROFINET interfaces
Processing time for bit operations
Display screen size
Suitable PROFINET devices (switches,
S7-1500R/H CPUs, S7-1500 CPUs
(V2.5 or later) and HMI devices) in the
PROFINET ring, max.
Suitable PROFINET devices (see
above) in the PROFINET ring and sepa-
rated with switches (line), max.
Modules per rack, max.
Distance between CPUs, max.
Redundancy connections (synchroniza-
tion link)
System redundancy
Switchover time
1)
The switchover time is the time between failure of the primary CPU until the backup CPU takes over control of the
1)
process as the primary CPU at the point of interruption. The switchover time can lengthen the cycle time.
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
CPU 1513R-1 PN
1.5 MB
300 KB
32 GB
32 KB/32 KB
1
-
0.04 μs
3.45 cm
50 (recommended: max.
16)
66
2 (PM/PS and CPU)
Depends on media con-
verter used (with
PROFINET cable, max.
100 m)
PROFINET ring
Yes
300 ms
CPU 1515R-2 PN
3 MB
500 KB
32 GB
32 KB/32 KB
1
1
0.03 μs
6.1 cm
50 (recommended: max.
16)
66
2 (PM/PS and CPU)
Depends on media con-
verter used (with
PROFINET cable, max.
100 m)
PROFINET ring
Yes
300 ms
System overview
2.3 S7-1500 R/H-CPUs
CPU 1517H-3 PN
8 MB
2 MB
32 GB
32 KB/32 KB
1
1
0.002 μs
6.1 cm
50
258
2 (PM/PS and CPU)
Depends on the synchro-
nization module used:
max. 10 km
Fiber-optic cable
Yes
50 ms
35