Siemens Simatic S7-1500R System Manual page 29

System overview
2.1 What is the S7-1500R/H redundant system?
S7-1500H
You connect the CPUs to the Industrial Ethernet over a PROFINET interface or using an
additional switch.
S7-1500H supports the following number of PROFINET devices (switches, S7-1500R/H
CPUs, S7-1500 CPUs (V2.5 or later) and HMI devices):
● In the PROFINET ring: max. 50
● In the PROFINET ring and separated with switches (line): max. 258
The redundancy connections in S7-1500H are two duplex fiber-optic cables that connect the
CPUs directly with plug-in synchronization modules.
①
Load power supply (optional)
②
CPU 1517H-3 PN
③
PROFINET cable (redundancy connections, PROFINET ring)
④
Redundancy connections (two duplex fiber-optic cables)
⑤
IO device in the PROFINET ring
⑥
Switch
⑦
IO device outside the PROFINET ring (separated with switch)
Figure 2-8 S7-1500H configuration version
28
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA