In addition, H-SyncForwarding forwards the synchronization data even during
reconfiguration of the PROFINET ring. H-SyncForwarding avoids a cycle time increase if the
PROFINET ring is interrupted.
NOTE
Support of H-SyncForwarding
The technical specifications typically state whether a PROFINET device supports
H‑SyncForwarding.
The GSD file will also indicate whether the device supports H‑SyncForwarding. The device
supports H‑SyncForwarding when the "ApplicationClass" attribute contains the
"HighAvailability" token.
You will find more information on H-Sync Forwarding in the system manual S7-1500R/H
redundant system (https://support.industry.siemens.com/cs/ww/en/view/109754833).
Accessories
You can find information on the topic of "Accessories/spare parts" in the system manual for
S7-1500R/H redundant system
(https://support.industry.siemens.com/cs/ww/en/view/109754833).
3.4 Firmware functions
Functions
CPU1515R‑2PN supports the following firmware functions:
Function Description Additional information
CPU redundancy There are two duplicate CPUs that synchronize their data
via redundancy connections within a PROFINET ring. If
one of the CPUs fails, the other CPU retains control of the
process.
S7-1500R/H redundant system
(https://support.industry.siemens.
com/cs/ww/en/view/109754833) sys
tem manual
Integrated system
diagnostics
The system automatically generates the messages for the
system diagnostics and outputs these messages via a
programming device/PC, HMI device or the integrated
display. System diagnostics information is also available
when the CPUs are in operating state STOP.
Function manual Diagnostics
(https://support.industry.siemens.
com/cs/ww/en/view/59192926)
Integrated trace
functionality
Trace functionality supports you in troubleshooting
and/or optimizing the user program.
You record device tags and evaluate the recordings with
the trace and logic analyzer function. Tags are, for
example, drive parameters or system and user tags of a
CPU.
Trace and logic analyzer functions are suitable for monit
oring highly dynamic processes.
Note: Note that the S7-1500R/H redundant system sup
ports recording of measurements. However, saving the
measurements to the SIMATIC memory card is not sup
ported.
Function manual Using the trace and
logic analyzer function
(https://support.industry.siemens.
com/cs/ww/en/view/64897128)
17
Product overview
3.4 Firmware functions
CPU 1515R-2 PN (6ES7515-2RN03-0AB0)
Equipment Manual, 11/2022, A5E42009914-AD