Application planning
3.2 Restrictions compared to the S7-1500 automation system
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
53
Function
Restriction
S7-1500H: Failure of the IO devices
in the PROFINET ring when
PROFINET cables to primary CPU
are disconnected
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
Isochronous mode is not supported
Test function: Testing with break-
points
Not supported: In STEP 7, the message "The device does
not support breakpoints" appears.
Trace
The storage of measurements on the SIMATIC memory card
(measurements in the device) is not supported.
Web server
Not supported
Certificate management
Not supported
1)
Distributed I/O systems can be connected over PN/PN couplers.
Summary of Contents for Simatic S7-1500H
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