Siemens Simatic S7-1500R System Manual page 54

Function
S7-1500H: Failure of the IO devices
in the PROFINET ring when
PROFINET cables to primary CPU
are disconnected
Isochronous mode
Test function: Testing with break-
points
Trace
Web server
Certificate management
Distributed I/O systems can be connected over PN/PN couplers.
1)
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
3.2 Restrictions compared to the S7-1500 automation system
Restriction
If you remove both PROFINET cables from the primary CPU
(CPU 1517H-3 PN) in the RUN-Redundant system state,
please note the following:
The primary CPU can no longer access the IO devices in
•
the PROFINET ring. The IO devices will return to the sub-
stitute values.
The redundant system will not execute a primary-backup
•
switchover.
The redundant system will remain in the RUN-Redundant
•
system state.
Isochronous mode is not supported
Not supported: In STEP 7, the message "The device does
not support breakpoints" appears.
The storage of measurements on the SIMATIC memory card
(measurements in the device) is not supported.
Not supported
Not supported
Application planning
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