Properties of a Star Structure | Siemens X-400 instruction

Introduction to Industrial Ethernet Switches

1.2.2Star Structure

Functional Description

Star structures can be implemented with the SCALANCE X414-3E. The cascading depth and total span of a network are limited only by the signal propagation times of the communication connections.

Properties of a Star Structure

Each SCALANCE X414-3E communicates over a TP or FO cable with a central switch with which all other switches are also connected within a star structure. Communication is possible over the optical ports in slots 5, 6, or 7 or over the elec- trical ports in slots 5 and 9 to 11. With the fault mask, it is possible to monitor the port states using the signaling contact. In addition to connecting the switches to the central SCALANCE X414-3E, it is also possible to connect one or more end de- vices.

16	Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
	C79000-G8976-C186-03

Image 16

Siemens X-400 technical specifications Properties of a Star Structure

Contents

C79000-G8976-C186-03 Release 11/2005 Product Description Classification of Safety-Related Notices Copyright Siemens AG, 1998 to 2005 All rights reserved Safety Instructions Regarding your Product Trademarks Personnel Qualification Requirements Correct Usage of Hardware Products Correct Usage of Software Products C79000-G8976-C186-03 Purpose of the Operating Instructions PrefaceValidity of the Operating Instructions Further Documentation Standards and Approvals Contents 119 131139 Index 145 Switching Introduction to Industrial Ethernet SwitchesBasic Information Need for Industrial Ethernet Switches Technical Options network topologies Topologies Ring with Redundancy ManagerFunctional Description Connection of Other Network Segments or End Devices Electrical Ring Optical Ring Configuration Example 1000 Mbit/s Star Structure Properties of a Star Structure Star structure Electrical Line Structure Properties of the Line Structure Redundant Linking of Network Segments Redundant linking of two subnets Introduction to Industrial Ethernet Switches Properties, Functionality and Features of Scalance System Description of Scalance System Description of Scalance Components of Scalance Component Function Transmission Mode Ports of Scalance1 10Base-T / 100Base-TX Transmission Rate Connectors Transmission mediumTransmission range Maximum transmission distance segment length is 100 m 2 1000Base-TX Connectors used are 8-pin RJ-45 jacksTransmission rate of the electrical gigabit ports is 1 Gbps 3 100Base-FX Bfoc connectors are used 4 1000Base-SX SC duplex female connectors are usedTransmission rate of the optical gigabit ports is 1 Gbps 5 1000Base-LX Compatibility of Scalance Compatibility ListEnd devices Network components in a line or star structure System Description of Scalance Scalance X414-3E Basic Device Product Description of ScalanceOverview Product Description of Scalance Components of the Product Spares Power Module Digital Inputs Switch CPUSlots Slot Slots 6No function in system Slot 9 through Ports of the Scalance X414-3E Power Module P1 P1 P1 P2 P2 P2 P3 P3 P3 P4 P4 P4 Signaling Contact Failure of the power supplyChange to the DIL switch during operation Bad link status of a port Digital Inputs DI Module Switch CPU LEDs on the Switch CPU Serial Port Ethernet Port Area of Application Plug Configuration PlugHow It Works Diagnostics Startup Behavior X414-3E Startup Ports 10 Ports on the basic device Product Description of Scalance Media Modules Media Modules, Covers, Dummy CoverAvailable Module Types Options for Slot Options for Slots 6 Connector Connectors are 2x2 Bfoc socketsFast Ethernet Media Module MM491-2 100Base-FX Properties Fast Ethernet Media Module MM491-2LD 100Base-FX Slots of the MM491-2LD media module Gigabit Media Module MM492-2 1000Base-SX LED Display of the Gigabit Media Module Gigabit Media Module MM492-2LD 1000Base-LX Slot of the MM492-2LD media module Covers, Dummy Cover CoversSlots of the Covers Available Cover Types CV490 Displays of the Cover Further Slots for the CV490 2x100 Cover LEDs of the CV490 2x100 cover have no function Further Slots for the CV490 4x100 Cover 10 Slots 9 through 11 for cover CV490 Slot of the Dummy Cover Displays of the Dummy Cover Media Modules, Covers, Dummy Cover Twisted Pair Extender EM495-8 Extender ModulesEight Additional 100Base-TX Ports Covers Twisted pair extender EM495-8 Media Module Extender EM496-4 Four Additional Slots for Media Modules Covers Extender Modules Extender Modules Installation and Commissioning Installing / Removing the Scalance X414-3E Installing / Uninstalling with an S7-300 Rail Installing on an S7-300 Rail Installation on an S7-300 rail Removing from the S7-300 rail Installing / Uninstalling with a 35 mm Standard Rail Installation on a 35 mm Standard Rail Installation on a 35 mm standard rail Removing from the 35 mm Standard Rail Installing / Removing a Media Module Installing a Media Module Removing a Media Module Inserting a media module Fitting / Removing the Covers Variants of the CoversFitting a Cover Removing a Cover Fitting a Dummy Cover Fitting / Removing a Dummy CoverRemoving a Dummy Cover Installing / Removing the Twisted Pair Extender Installing / Removing Extender ModulesInstalling the Twisted Pair Extender on the S7-300 Rail Installing the twisted pair extender on the S7-300 rail Removing the Twisted Pair Extender from the S7-300 Rail Installation and Commissioning Installation and Commissioning Installation and Commissioning Installing / Removing the Media Module Extender Installing the Media Module Extender on the S7-300 Rail Installing the media module extender on the S7-300 rail Installation and Commissioning Installation and Commissioning Installation and Commissioning Installation and Commissioning Specifying the Slot Number Slot Numbers of the Modules and CoversApplying the Slot Numbers Factory Defaults DIL SwitchesFurther Device Properties R1, R2 Power Supply Connectors Conn L1+ + 24 V power supply Ground L2+Ports Polarity Reversal Protection X1 Floating signaling contact relay connector Connectors of the Signaling Contact and Grounding StrapProtective earth Digital Input Connectors Digital input IN5 Connectors for the Twisted Pair Cables FastConnect Cabling System Connecting TP Cord to FC Cable 14 IE FC RJ-45 Modular Outlet Insert 1GE 15 IE FC RJ-45 Modular Outlet Insert 2FE X414-3EX208 A1+A2=10m A1+B+A2=100m Removing the FC Cable from Scalance X414-3E 17 Releasing the FastConnect RJ-45 plug Connectors for Fiber-Optic Cables Gigabit Transmission with FOC Fast Ethernet Transfer with FOC 100 DIL Switches Operator Controls Switch Status Meaning Ring Ports in Slots 5 to 103 Possible Settings of the Ring Ports SwitchSchematic below, switches R1 and R2 are set to OFF 104 Resetting to the factory defaults Defining the fault mask and the LED displaysSelect / SET Button Changing the display modes Display Mode a Mode B Mode C Mode D LED Display Startup Behavior of the Scalance X414-3E LED on LED off LED flashes During deVice startup During ope Selecting the Display Modes Stby DM1 DM2 Display Modes a through C LED Display Power ModuleLabel Color Status Meaning Display in Display Mode D Off No problem has been detected by LED Display of the Digital Inputs 1 through LED Display DI ModuleMode LED Display Switch CPU Display Modes a through D Display mode A, the current port status is displayed LED Display of the Ports DMode a through DMode DPort Statuses in DMode a Port Color Status Meaning Display mode B, the current transmission rate is displayed Port Statuses in DMode B Port Statuses in DMode C 115 Port Statuses in DMode D 116 Removing the C-PLUG Replacing the C-PLUGInserting the C-PLUG in the Slot Show Location Determining the Location of a Scalance Technical Specifications Interfaces Switching Properties PlugPermitted Cable Lengths Cascading Depth Mtbf information mean time between failure Permitted Environmental ConditionsConstruction Device type 122 Media Module MM491-2 100Base-FX Media Module MM491-2LD 100Base-FX Media Module MM492-2 1000Base-SX Environmental Conditions / EMC Media Module MM492-2LD 1000Base-LX Extender Module EM495-8 112,4 109,5 107,5 87,6 145 128 Extender Module EM496-4 152 124 112,4 109,5 107,5 87,6 145 154 138 130 CE Marking Approvals, Certificates131 EMC Directive Explosion Protection DirectiveRequired FDA and IEC labels Complieswith21CFR 1040.10and1040.11 Directive on Machines Installation Guidelines133 UL Approval Information Technology Equipment UL Approval Industrial Control EquipmentCSA Approval Information Technology Equipment CSA Approval Industrial Control Equipment CULus Approval Information Technology Equipment CULus Approval Industrial Control EquipmentCULus Approval Hazardous Location 135 FM Approval Atex Approval Certification 137 138 Glossary Aging timeAutocrossover Autonegotiation Display Mode Fault maskIng Digital input Modes MirroringMultimode Signaling Contact Single modeRing port Spanning Tree Port with a TP connector RJ-45 jack Store and forwardTP Port Virtual LAN within a physically existing network 144 Index Transmission mode 146 Technical Support Worldwide, available 24 hours a day Service & Support on the Internet