Siemens SIMATIC S7-1500 System Manual page 6

Table of contents
5 Application planning.......................................................................................................................... 72
5.1 Requirements................................................................................................................... 72
5.2 Restrictions compared to the S7-1500 automation system................................................. 74
5.3 Configuration versions...................................................................................................... 76
5.3.1 S7-1500R/H configuration with IO devices in the PROFINET ring......................................... 76
5.3.2 Configuration of S7-1500R/H with switches and additional line topology........................... 78
5.3.3 Specific configuration variants for S7-1500H..................................................................... 81
5.3.3.1 Configuration of line topology with S2 devices and switch................................................. 81
5.3.3.2 Configuration of PROFINET rings with R1 devices............................................................... 82
5.3.3.3 Configuration of PROFINET rings with R1 devices and switches with MRP interconnec­
tion
5.3.3.4 Configuration of PROFINET rings with R1 devices and Y-switch with S2 devices.................. 87
5.3.3.5 Configuration of line topology with R1 devices.................................................................. 89
5.3.3.6 Line topology configuration with R1 devices and switches................................................. 92
5.3.3.7 Line topology configuration with R1 devices and Y-switch with S2 devices......................... 93
5.3.3.8 Configuration of combined topology with S2 devices........................................................
5.3.3.9 Configuration of combined topology with R1 devices........................................................ 99
5.3.3.10 Configuration without additional devices.......................................................................... 101
5.4 Redundancy scenarios....................................................................................................... 102
5.4.1 Introduction..................................................................................................................... 102
5.4.2 Failure of the primary CPU................................................................................................ 103
5.4.3 Failure of the backup CPU................................................................................................. 104
5.4.4 Failure of the PROFINET cable in the PROFINET ring........................................................... 106
5.4.5 Specific redundancy scenarios for S7-1500H..................................................................... 108
5.4.5.1 Failure of a redundancy connection in S7-1500H............................................................... 108
5.4.5.2 Failure of both redundancy connections in S7-1500H > 55 ms apart ................................. 110
5.4.5.3 Failure of both redundancy connections and the PROFINET cable in the PROFINET ring...... 112
5.4.5.4 Failure of the two PROFINET cables in the PROFINET ring on the backup CPU..................... 114
5.4.5.5 Failure of an interface module in an R1 device in a PROFINET ring...................................... 116
5.4.5.6 Failure of the two PROFINET lines in PROFINET ring 1 at the primary CPU with R1
devices
5.4.5.7 Failure of both PROFINET lines between two R1 devices in a line topology......................... 120
5.4.5.8 Failure of a PROFINET line between two S2 devices in a line topology................................ 122
5.5 Failure scenarios............................................................................................................... 124
5.5.1 Failure of an IO device in the PROFINET ring...................................................................... 124
5.5.2 Failure of a switch (with additional line topology) in the PROFINET ring............................. 126
5.5.3 Specific failure scenarios with S7-1500R............................................................................ 128
5.5.3.1 Two cable interruptions in the PROFINET ring in S7-1500R > 1500 ms apart....................... 128
5.5.3.2 Two cable interruptions in the PROFINET ring in S7-1500R within ≤ 1500 ms..................... 130
5.5.3.3 Failure of the primary CPU when IO devices have failed in the PROFINET ring..................... 132
5.5.4 Specific failure scenarios with S7-1500H........................................................................... 134
5.5.4.1 Failure of both redundancy connections in S7-1500H ≤ 55 ms apart ................................. 134
5.5.4.2 Failure of one redundancy connection and the primary CPU in S7-1500H........................... 137
5.5.4.3 Failure of the two PROFINET cables in the PROFINET ring at the primary CPU...................... 138
5.5.4.4 Failure of the redundant system through safe state of the HF-CPUs.................................... 140
5.5.4.5 Failure of an interface module in an R1 device and of the PROFINET lines in two places
of a PROFINET ring.
5.5.4.6 Failure of the primary CPU in PROFINET rings with R1, S2 and S1 devices........................... 144
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