Product overview
2.3 Hardware properties
CPU 1515R-2 PN (6ES7515-2RM00-0AB0)
Equipment Manual, 11/2019, A5E42009914-AB
15
PROFINET IO interface
(X1 P1 R and X1 P2 R)
The CPU has an X1 interface with two ports (X1 P1 R
and X1 P2 R).
• The PROFINET IO interface X1 (default P1 R) is
used to set up the PROFINET ring with the two
CPUs and the IO devices.
• The PROFINET IO interface X1 (default P2 R) is
used to make the connection between the two R-
CPUs in the PROFINET ring.
In the PROFINET ring, the synchronization frames
between the CPUs are transmitted via the following
connections:
– The direct connection (X1 P2 R)
– The indirect connection (X1 P1 R) via the IO de-
vices
• The interface supports PROFINET IO RT (Real-
Time) and PROFINET basic functionality.
Basic PROFINET functionality comprises:
– HMI communication
– Communication with the configuration system
– Communication with a higher-level network
(backbone, router, Internet)
– Communication with another machine or auto-
mation cell
• Redundant System S7-1500R/H
(
https://support.industry.siemens.
com/cs/ww/en/view/109754833)
System Manual
• Function manual PROFINET
(
https://support.industry.siemens.
com/cs/ww/en/view/49948856)
PROFINET interface
(X2 P1)
The CPU has an X2 interface with one port (X2 P1).
The interface supports PROFINET basic functionality.
Operation of the CPUs as
IO controllers
As IO controllers the CPUs address the following con-
figured IO devices:
• IO devices with S2 system redundancy within the
PROFINET ring
• IO devices with S2 system redundancy that are
decoupled from the PROFINET ring via a switch
• Standard IO devices (switched S1 devices)
Standard IO devices usually do not support H-
Sync Forwarding.
To avoid a cycle time increase when the
PROFINET ring is interrupted, integrate the stand-
ard IO devices behind a switch and not in the
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