Siemens X-400 Manuel d'utilisateur Page 141
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Noté. / 5. Basé sur avis des utilisateurs
Glossary
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
C79000-G8976-C186-03
141
MDI
Medium Dependent Interface, - straight
On an MDI port or MDI cable, the receive (Rx) and the send (Tx) leads
are not crossed.
MDI-X
Medium Dependent Interface – crossover,
On an MDI-X port or MDI-X cable, the receive (Rx) and the send (Tx)
leads are crossed.
MIB
Management Information Base. The MIB is a formal description of net-
work objects in the form of a tree structure that contains all the relevant
information for network management in SNMP.
Mirroring
A port (mirror port) with its specific data traffic can be mirrored to an-
other port (monitor port) for test purposes. Protocol analysis devices
can be connected to the monitor port, in other words, the monitor port
is not available for data exchange. Mirroring has no effect on the mirror
port.
Modes
Modes are discrete waves used to transmit data within a fiber-optic
cable. With single mode fibers, only one wave propagates, whereas in
multimode fibers several waves propagate. Modes are patterns of elec-
tromagnetic fields in FOCs.
Multimode
In multimode transmission, the pulse is transferred using many modes
(waves) that travel along curved paths or are reflected within the core.
Attenuation is mainly caused by physical absorption and dispersion as
well as by mechanical bending. The amount of attenuation depends
among other things on the wavelength of the input light. Multimode
fiber-optic cables have an outer diameter of 125 µm and 50 or 62.5 µm
core diameter. Due to the larger core diameter the pulse edges de-
grade more than in single mode transmission resulting in shorter
transmission distances.
OSM
Optical Switching Module – SIMATIC NET Ethernet switch with optical
ports.
Rapid spanning tree
The Rapid Spanning Tree protocol (RSTP) allows redundant transmis-
sion paths. This prevents circulating frames and, if a fault develops,
provides an alternative path within one second (reconfiguration time).
Reconfiguration time
The time required to restore a functional configuration if a device fails
or a network cable is interrupted.
- Trademarks 3
- 6 C79000-G8976-C186-03 6
- Preface 7
- Further Documentation 8
- Standards and Approvals 8
- Contents 9
- C79000-G8976-C186-03 10
- Introduction to 11
- Industrial Ethernet Switches 11
- 1.2 Topologies 13
- Electrical Ring 14
- Optical Ring 14
- Configuration Example 15
- 1.2.2 Star Structure 16
- 1.2.3 Line Structure 18
- SCALANCE X-400 21
- M M 4 9 2 - 2 23
- F O 2 x 1 0 0 0 23
- 2.2 Ports of SCALANCE X-400 24
- Transmission medium 25
- Transmission range 25
- Connectors 25
- 2.2.2 1000Base-TX 26
- 2.2.3 100Base-FX 27
- Transmission Range 28
- 2.2.4 1000Base-SX 29
- 2.2.5 1000Base-LX 30
- Compatibility List 31
- 32 C79000-G8976-C186-03 32
- Overview 33
- Components of the Product 35
- Signaling Contact 40
- DI Module 41
- Serial Port 43
- Ethernet Port 43
- Area of Application 44
- How It Works 44
- Diagnostics 45
- Startup Behavior 46
- 4.1 Media Modules 49
- Options for Slot 5 50
- Options for Slots 6 and 7 50
- Properties 51
- Connector 51
- 4.2 Covers, Dummy Cover 55
- CV490 2x1000 56
- Displays of the Cover 56
- CV490 2x100 57
- CV490 4x100 58
- Slot of the Dummy Cover 59
- Displays of the Dummy Cover 59
- 60 C79000-G8976-C186-03 60
- Extender Modules 61
- 66 C79000-G8976-C186-03 66
- Installing on an S7-300 Rail 68
- Dummy Cover 72
- Removing a Media Module 73
- Variants of the Covers 74
- Fitting a Cover 74
- Removing a Cover 74
- Fitting a Dummy Cover 75
- Removing a Dummy Cover 75
- Specifying the Slot Number 88
- Applying the Slot Numbers 88
- 6.5 Factory Defaults 89
- 6.6 Ports 90
- I N 3I N 4 92
- I N 5I N 8 I N 7 M 5 I N 6 93
- X 4 1 4 - 3 E 94
- 96 C79000-G8976-C186-03 96
- 6.7 Operator Controls 101
- Ring Ports in Slots 5 to 7 103
- R1 and R2 are set to OFF 104
- 6.8 LED Display 106
- Display Modes A through C 109
- Display in Display Mode D 110
- I N 1 / I N 5 111
- Display Modes A through D 112
- Port Statuses in DMode A 113
- Port Statuses in DMode B 114
- Port Statuses in DMode C 115
- Port Statuses in DMode D 116
- 6.9 Replacing the C-PLUG 117
- 6.10 Show Location 118
- Technical Specifications 119
- 122 C79000-G8976-C186-03 122
- 7.6 Extender Module EM495-8 127
- 1 0 7 , 5 128
- 1 0 9 , 5 128
- 1 1 2 , 4 128
- 7.7 Extender Module EM496-4 129
- Approvals, Certificates 131
- EMC Directive 132
- Required FDA and IEC labels 132
- Directive on Machines 133
- Installation Guidelines 133
- Note for Australia 134
- FM Approval 136
- ATEX Approval 136
- Certification 137
- 138 C79000-G8976-C186-03 138
- Glossary 139
- A&D Technical Support 147
- Nuernberg 147
- Johnson City 147
- A&D Technical Support 148
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