Siemens SIMATIC NET System Manual

Table of contents
Industrial Ethernet
8 System Manual, 09/2019, C79000-G8976-C242-10
1.5.10 Network structures ................................................................................................................. 61
1.5.10.1 Infrastructure mode ................................................................................................................ 61
1.5.10.2 Ad hoc networks..................................................................................................................... 66
1.5.11 Other wireless technologies ................................................................................................... 66
1.6 Industrial Wireless Control ..................................................................................................... 67
1.6.1 Mobile wireless standards GSM, UMTS and LTE ................................................................. 67
1.6.2 The mobile wireless standard of the 5th generation .............................................................. 68
2 Network structures and network configuration ....................................................................................... 71
2.1 Integration of a production network in an enterprise network ................................................ 71
2.2 Network structures ................................................................................................................. 75
2.2.1 Network topologies ................................................................................................................ 75
2.2.2 Linear structure ...................................................................................................................... 75
2.2.3 Star structure .......................................................................................................................... 76
2.2.4 Ring structure ......................................................................................................................... 79
2.2.5 Redundant coupling of network segments with electrical and fiber-optic components ......... 81
2.2.6 VLAN ...................................................................................................................................... 82
2.3 Media redundancy ................................................................................................................. 82
2.3.1 Options of media redundancy ................................................................................................ 82
2.3.2 Media redundancy in ring topologies ..................................................................................... 83
2.3.3 MRP ....................................................................................................................................... 84
2.3.4 MRP Interconnection ............................................................................................................. 86
2.3.5 MRPD ..................................................................................................................................... 88
2.3.6 HRP ........................................................................................................................................ 89
2.3.7 PRP ........................................................................................................................................ 89
2.3.8 RNA ........................................................................................................................................ 91
2.3.9 STP / RSTP / MSTP .............................................................................................................. 92
2.3.10 RSTP+.................................................................................................................................... 93
2.3.10.1 Properties and functions of RSTP+ ....................................................................................... 93
2.3.10.2 Topology for RSTP+ .............................................................................................................. 94
2.3.11 Link aggregation..................................................................................................................... 97
2.4 Network security..................................................................................................................... 98
2.4.1 The Industrial Security concept of Siemens ..........................................................................
98
2.4.2 Firewalls ............................................................................................................................... 100
2.4.3 NAT/NAPT ........................................................................................................................... 101
2.4.4 "Virtual Private Networks" (VPNs) ....................................................................................... 102
2.4.5 Cell protection concept ........................................................................................................ 102
2.4.6 SIMATIC NET products for network security ....................................................................... 104
3 Examples of applications ..................................................................................................................... 107
3.1 Virtual segmentation ............................................................................................................ 107
3.2 Redundantly coupled networks ............................................................................................ 108
3.3 Data protection during remote maintenance ........................................................................ 110
3.4 Cell protection concept ........................................................................................................ 111
3.5 Network for high data throughput and many nodes ............................................................. 113
3.6 Optimization of a power screwdriver control ........................................................................ 114
3.7 Controlling material transportation with SCALANCE components ...................................... 116

Siemens SIMATIC NET Specifications

General

Category	Industrial Communication Software
Manufacturer	Siemens
Operating Systems	Windows, Linux
Protocols Supported	PROFIBUS, PROFINET, OPC UA
Compatibility	Siemens PLCs, Third-party devices with supported protocols