System overview
2.1 What is the S7-1500R/H redundant system?
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
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Differences between S7-1500R and S7-1500H
Table 2- 1
S7-1500R and S7-1500H system differences
S7-1500R
S7-1500H
CPU 1513R-1 PN
CPU 1515R-2 PN
CPU 1517H-3 PN
Performance
•
Transfer rate of 100 Mbps (for synchronization
and communication)
•
Data work-memory:
–
CPU 1513R-1 PN: max. 1.5 MB
–
CPU 1515R-2 PN: max. 3 MB
•
Code work-memory:
–
CPU 1513R-1 PN: max. 300 KB
–
CPU 1515R-2 PN: max. 500 KB
•
Significantly greater performance than
S7-1500R due to
–
separate redundancy connections over fi-
ber-optic cable
–
high computing power
•
transfer rate of 1 Gbps (for synchronization)
•
Data work-memory: max. 8 MB
•
Code work-memory: max. 2 MB
Hardware
•
The CPUs are identical in design with the
respective S7-1500 standard versions.
•
Synchronization of the CPUs takes place over
the PROFINET ring.
•
The H-Sync forwarding function is recom-
mended for all nodes in the PROFINET ring.
•
Part of the bandwidth on the PROFINET cable
is required for synchronization of the CPUs.
Less bandwidth is therefore available for
PROFINET IO communication.
•
Each CPU has two optical interfaces.
•
Synchronization of the CPUs runs separately
from the PROFINET ring over fiber-optic ca-
bles.
•
The full bandwidth of the PROFINET cable is
available for PROFINET IO communication.
Range
•
Distance between the two R-CPUs:
–
Max. 100 m without media converter
–
Several kilometers with media converter
(depends on the media converter used)
•
Distance between the two H CPUs:
–
Maximum of 10 km (depends on the syn-
chronization modules used)
Configuration limits
•
In the PROFINET ring: Max. 50 PROFINET
devices, including R-CPUs (max. 16
PROFINET devices recommended)
•
In the PROFINET ring and separated with
switches (line): Max. 66 PROFINET devices
(including R-CPUs)
•
In the PROFINET ring: Max. 50 PROFINET
devices (including H-CPUs)
•
In the PROFINET ring and separated with
switches (line): Max. 258 PROFINET devices
(including H-CPUs)
Содержание Simatic S7-1500H
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