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Active Components and Topologies
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SIMATIC NET Tw isted-Pair and Fiber-Optic Networks
C79000-G8976-C125-02
6.1.3.3 Functions Specific to the Fiber-Optic Interface
Standardization
The two fiber-optic ports on the underside of the OLM comply with the IEEE 802.3
standard: 10BASE-FL. These are implemented as two BFOC female connectors
for connection of glass fiber-optic cables (62.5/125 µm or 50/125 µm). The
operating wavelength is 850 nm.
Fiber-Optic Monitoring
The OLM monitors the connected ITP line segments for breaks using regular link
test pulses. The OLM does not send data to a fiber-optic cable from which it is not
receiving a link test pulse.
Redundancy
In areas in which data reliability is the most important factor, redundancy can
ensure that data exchange is continued despite the breakdown of a fiber-optic
cable or an OLM. Often a standby cable is installed in a different cable duct. If a
fault occurs, data exchange is switched automatically from the main to the standby
line.
6.1.4 Topologies
A variety of topologies are possible with Industrial Ethernet OLMs and ELMs, as
follows:
S Bus structure
S Star structure
S Redundant ring structure
S Combination of the basic structures listed above
Within these topologies, two structures (bus and redundant ring structure) can be
considered as the basic structures.
- C79000–G8976–C125–02 1
- Trademarks 2
- Qualified Personnel 3
- General Information 9
- 1.1 Symbols 10
- Industrial Ethernet Networks 15
- IEEE Standard 802.3 17
- Baseband Signaling 17
- Collision Domain 18
- 2.2 Industrial Ethernet 19
- 2.3 Fast Ethernet 20
- Fiber Optic (100BASE-FX) 21
- 2.4 Switching 22
- Configuring Networks 27
- 3.1.1 Fiber-Optic Links 28
- Optical Power Loss 29
- 3.1.3 AUI Links 31
- Optical Link Module (OLM) 33
- Electrical Link Module (ELM) 33
- Optical Star Coupler Cards 34
- Electrical Star Coupler Cards 34
- 3.2.2 Bus Structure 37
- Example: 40
- Checking the example: 41
- Configuration Rule 43
- Note on OLM Version 1: 44
- Components 45
- 3.3 Switched LANs 49
- 3.4.1 Twisted-Pair Links 50
- 3.4.2 ESM Bus Structure 51
- 3.5.1 Fiber-Optic Links 53
- 3.5.2 OSM Bus Structure 55
- Redundant Optical Ring 56
- Standby-Sync Port 57
- Synchronization Cable 57
- Networks 59
- ITP (Sub-D Connectors) 60
- FC Twisted-Pair 60
- Guidelines for Laying Cables 60
- Structured Cabling 61
- Maximum Cable Lengths 62
- Shielding 63
- Labeling 63
- Notes on Installation 66
- Versions Available 66
- Ordering Data 72
- 4.4 Twisted -Pair Cord 73
- Twisted-Pair (TP) Cables 77
- Product Range 79
- Areas of Application 84
- Mounting Bracket 90
- 4.7 RJ-45 Connector 95
- Installation 97
- Example of an Application 97
- C79000-G8976-C125-02 100
- Chapter Overview 101
- Fiber-Optic Cables (FO) 102
- Advantages 102
- Point-to-Point Link 102
- 5.2 Glass Fiber-Optic Cables 103
- Technical Specifications 104
- Properties 107
- Application 107
- 5.2.5 Special Cables 114
- Fitting Connectors on Site 115
- Preassembled Cables 115
- Overview 119
- 6.1.2 I nstallation 121
- 6.1.3.1 General Functions 121
- Handling Collisions 122
- Auto Partitioning 122
- Reconnection 122
- Jabber Lockup Protection 123
- Link Control 123
- Auto Polarity Exchange 123
- 6.1.4 Topologies 124
- 6.1.4.1 Bus Structure 125
- OLM OLMOLM OLM 126
- 6.2.1 Application 127
- 6.2.2 Design 128
- 6.2.3 Functions 129
- Fast Redundancy in the Ring 130
- Redundant Linking of Networks 130
- Variants of the O SM 131
- Variants of the ESM 131
- Bus Structure 131
- Figure6-7 BuswithOSMs 132
- Figure 6-8 Bus with ESMs 132
- ESM ITP 80 134
- Network Expansion 135
- Structure of a Redundant Link 136
- How Standby Redundancy Works 137
- Accessories 137
- Functions 138
- Remote Monitoring 138
- 6.3 ASGE Active Star Coupler 140
- 6.4.1 Overview 142
- 6.4.3 Functions 143
- 1. TP cord 9/RJ-45 144
- 2. ITP XP standard cable 9/9 144
- 3. Fiber-optic cable (FO) 144
- 6.5.1 Overview 145
- 6.5.3 Functions 146
- Mini UTDE RJ-45 147
- Bus (LAN) Cables in Plants 150
- Twisted-Pair Signal Level 151
- Operation with 24 V DC 151
- Operation with Live Voltage 151
- Cabling Components 151
- Aims of Bonding 155
- Troubleshooting 158
- Shielding Cables 161
- Handling Bus Cable Shields 162
- Establishing Shield Contact 163
- Cabinet Lighting 165
- 6.4.4.2) 166
- Fiber-Optic Cables 167
- Cable Groups 167
- Conditions 167
- 7.4.3 Cabling within Closets 169
- Using Fiber-Optic Cables 170
- Redundant Bus Cables 172
- Install Bus Cables Separately 172
- 7.7 Installing LAN Cables 174
- 9-Pin Sub-D Connector 177
- Fitting the Connector 178
- 15-Pin Sub-D Connector 180
- Fitting Connectors 181
- Braided shield 182
- Shield foil 182
- BFOC Connectors 187
- Cubicles 189
- 8.1 IP Degrees of Protection 190
- Degree of Protection 191
- 8.2 SIMATIC NET Components 192
- Standards 193
- Further Literature 193
- Dimension Drawings 195
- OSM ITP62-LD, ITP53 197
- Side View of the OSM 199
- (side view) 202
- 9.4 ASGE Active Star Coupler 203
- 9.5 Optical Transceiver 204
- 9.7 Connectors 205
- 15-pin Sub-D Connector 206
- RJ-45 Connector 207
- Tilting/ 209
- IE FC Outlet RJ-45 209
- References 211
- Systems: 214
- Training Center 218
- Further Support 218
- Ordering Special Cables 219
- Staff qualification 222
- Safety guidelines 223
- 1. Functional description 223
- 2. Configuration 224
- 4. Further support 225
- 5. Technical data 226
- SIMATIC NET 227
- Industrial Ethernet 227
- The Package 229
- Installing an OSM/ESM 229
- Further Documentation 230
- Finding Information 230
- Guide to the Manual 230
- Audience 230
- Standards and Approvals 231
- Recycling and Disposal 231
- Documentation Feedback 231
- Industrial Ethernet OSM/ESM 232
- C79000-Z8976-C068-04 232
- Contents 233
- Introduction 235
- 1.1.1 OSM ITP62 237
- 1.1.2 OSM ITP62-LD 239
- 1.1.3 OSM ITP53 241
- 1.1.4 ESM ITP80 242
- 1.1.5 OSM TP62 243
- 1.1.6 ESM TP80 245
- Learning Addresses 248
- Deleting Addresses 248
- 3.1 Bus Structure 252
- Figure 8: Bus with ESMs 253
- 3.2 Redundant Ring Structure 254
- 1 Fibre-optic (FO) 257
- 2 ITP XP standard cable 257
- Ring 1 (OSM ring) 257
- Ring 3 (OLM ring) 257
- Ring 2 (ESM ring) 257
- Compatibility 260
- 1 Fiber-optic cable (FO) 261
- Redundant Coupling of Rings 262
- 4.1 ITP/TP Ports 268
- 4.1.2 TP Ports 269
- Auto-negotiation Mode 270
- 4.1.4 FO Ports 271
- 4.1.5 Standby Sync Port 272
- 4.1.6 Serial Interface 273
- Power Supply 274
- Signaling Contact 275
- In the RM Mode (additional) 275
- Sync Port: 275
- OSM/ESM in the Standby Mode: 275
- 4.2.1 LED "Status" 276
- 4.2.2 LED "Power" 278
- 4.2.3 Port LEDs 279
- LED on LED on 280
- 4.2.4 Operator Controls 281
- Maintenance 283
- 5.2 Installation 285
- Standard Rail Mounting 286
- Removing from a Standard Rail 287
- Wall Mounting 290
- 5.3 Cleaning 292
- 5.4 Maintenance 293
- Firmware Update 295
- Preparations 296
- SIMATIC Training Center 309
- Notes on the CE Mark 311
- Declaration of Conformity 312
- Glossary 313
- Bus segment 320
- Bus system 320
- Grounding 322
- Suppressor 326
- Terminating resistor 326
- Glossary-10 328
- Abbreviations 329
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