Siemens ESM technical specifications Bus Structure, Bus with OSM

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Network Topologies with OSM/ESM

3.1Bus Structure

With OSMs or ESMs, bus structures can be implemented . The cascading depth and total span of a network are limited only by the monitoring times of the communication connections. These times must always be set higher than the signal delay of the transmission path.

PC	S7-400	S7-300	S7-400

3

OSM

ITP 62

4

OSM

ITP 62

OSM TP 62

4

OSM ITP

4

OSM ITP 62

1

1

1

1

1Fiber-optic cable (FOC)

3TP cord 9/RJ-45

4ITP standard cable 9/15

Figure 10: Bus with OSM

Industrial Ethernet OSM/ESM	29
C79000-Z8976-C068-10

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Contents Simatic NET Copyright Siemens AG 2000/02, All rights reserved Classification of Safety-Related NoticesTrademarks Safety Instructions Regarding your ProductQualified Personnel Correct Usage of Hardware ProductsPrior to Startup Correct Usage of Software ProductsPreface Installing an OSM/ESMPurpose of the Operating Instructions PackageValidity of the Operating Instructions Further DocumentationFinding Information Audience Guide to the ManualPersonnel Qualification Requirements Standards and ApprovalsContents Introduction Introduction Overview of the Variants of the OSM/ESM OSM ITP62Possible Attachments Properties of the OSM ITP62 OSM ITP62-LD OSM ITP62-LDITP62-LD Properties of the OSM ITP62-LDOSM ITP53 OSM ITP53Properties of the OSM ITP53 ESM ITP80 ESM ITP80Properties of the ESM ITP80 OSM TP62 OSM TP62Properties of the OSM TP62 ESM TP80 ESM TP80Properties of the ESM TP80 OSM BC08 OSM BC08Properties of the OSM BC08 OSM TP22 OSM TP22Properties of the OSM TP22 ESM TP40 ESM TP40Properties of the ESM TP40 Limitation of Errors to the Network Segment Affected Simple Network Configuration and Network ExpansionFunctions Increased Network PerformanceSetting the Transmission Rate, Autonegotiation Deleting AddressesPackets with the Vlan Priority Tag Functions Network Topologies with OSM/ESM Bus with OSM Bus StructureBus with ESMs Redundant Ring Structure with OSMs Redundant Ring StructureESM in RM mode Redundant Coupling of Network Segments OSM/ESM Port Assignment in the Standby Mode Simultaneous Standby and Redundancy Manager OperationReplacing the Standby Master During Operation OSM RM mode Compatibility Compatibility of OSM Version 2/ESM with OSM/ORM VersionRing with OSM Version 2 as Redundancy Manager Redundant Coupling of Rings Standby Master Slave OSM Coupling Network Segments OSM RM modeInterfaces, Displays and Operator Controls ITP/TP Ports ITP PortsTP Ports Properties of the TP/ITP Ports Autonegotiation ModeLink Control Auto Polarity ExchangeInterfaces, Displays and Operator Controls FO Ports Standby-Sync Port Pinout Serial InterfaceTerminal Block for the Power Supply and Signaling Contact Power Supply Signaling ContactRM Mode additional OSM/ESM in the Standby Mode Input voltage must not exceed +30V DC or fall below -30V DC Digital InputsDisplays and Operator Controls Fault red LEDLED Display Status Stby Standby green LEDRM Redundancy Manager green LED Display mode Meaning LED PowerFault Mask Display Port LEDsFull duplex Port LED DIP Switches Two-Pin DIP SwitchSelect/Set Button Installation, Commissioning, Cleaning Maintenance Unpacking, Checking the Consignment Do not install damaged componentsPreparations InstallationStandard Rail Mounting Installing the OSM on a DIN Standard RailRemoving from the Standard Rail Removing from a Standard RailInstallation on the S7-300 Rail Installation on a Simatic S7-300 RailInstallation in the 19 Cubicle Installation in Pairs in the 19 CubicleWall Mounting Wall MountingWall Mounting Cleaning Maintenance Specifying the keyword OSM Firmware Firmware UpdateFirmware Update Firmware Update Firmware Update Firmware Update Ports Technical SpecificationsTechnical Specifications Switching Properties of OSM/ESM Permitted Cable LengthsCascading Depth Permitted Ambient Conditions/EMC Only horizontal installationMechanical Design PermittedConsignment / Order Numbers Accessories Standards and Approvals Product nameCE Mark Approval for Australia Area of ApplicationUL Approval CSA CertificationFM Approval Adherence to Installation Instructions Glossary Fault Mask Filtering ITP PortLatency Link ControlTP Port Industrial Ethernet OSM/ESM C79000-Z8976-C068-10 Http//www4.ad.siemens.de/view/cs/de/8677203 ReferencesIndustrial Ethernet OSM/ESM C79000-Z8976-C068-10 Ambient conditions, permitted IndexIndex