Schneider Electric INTERBUS Basic Network Interface Module What Is a Network Interface Module?

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Introduction

What Is a Network Interface Module?

Purpose	An island of STB I/O modules requires a network interface module (NIM) in the
	leftmost location of the basic island. Physically, the NIM is the first (leftmost) module
	on the island bus. Functionally, it is the gateway to the island bus—all
	communications to and from the island bus pass through the NIM. The NIM also has
	an integrated power supply that provides logic power to the island modules.
The Fieldbus
The Fieldbus	An island bus is a node of distributed I/O on an open fieldbus network, and the NIM
Network	is the island’s interface to that network. The NIM supports data transfers over the
	fieldbus network between the island and the fieldbus master.
	The physical design of the NIM makes it compatible with both an Advantys STB
	island and your specific fieldbus master. Whereas the fieldbus connector on each
	NIM type may differ, the location on the module front panel is essentially the same.
	Other NIM connectors, such as the power supply interface, are identical for all NIM
	types.
Communications
Communications
Roles	The NIM manages the exchange of input and output data between the island and
	the fieldbus master. Input data, stored in native island bus format, is converted to a
	fieldbus-specific format that can be read by the fieldbus master. Output data written
	to the NIM by the master is sent across the island bus to update the output modules
	and is automatically reformatted.
Integrated Power
Integrated Power	The NIM’s built-in 24-to-5 VDC power supply provides logic power to the I/O
Supply	modules on the basic segment of the island bus. The power supply requires a
	24 VDC external power source. It converts the 24 VDC to 5 V of logic power,
	providing 1.2 A of current to the island. Individual STB I/O modules in an island
	segment generally draw a current load of between 50 and 90 mA. (Consult the
	Advantys STB Hardware Components Reference Guide [890 USE 172] for a
	particular module’s specifications.)
	A basic NIM supports up to 12 Advantys STB I/O modules.

890USE19600 April 2004

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Contents 890USE19600 Version Advantys STBPage Table of Contents Application Example Important Information Safety InformationProcedure Safety Information Construed as a commitment by Schneider Electric About the BookAt a Glance Validity NoteAbout the Book Topic IntroductionSummary What’s in this Chapter? Basic What Is Advantys STB?Introduction Island Bus I/OWhat Is a Network Interface Module? Structural Components of a simplified Interbus network are shown below About InterbusOutputs in 4 ms Topology Physical LayerOn the shift register ring on which data is circulated NodeAddressing Input and output data in the masters bufferIntroduction Chapter? Product specifications of the basic Interbus NIMSTB NIB Basic NIM Module What’s in thisHardware External Features of the STB NIB 1010 NIMFeatures Called out in the illustration below Feature FunctionSpace reserved for the network connectors NIM housing Connections STB NIB 1010 Fieldbus InterfaceSummary Fieldbus PortCable ConnectorsInterbus NetworkingIndications LED Physical DescriptionOverview GeneralLEDs NIM ActivityDescription Power Supply InterfaceIsland is the two-receptacle connector illustrated below PhysicalRight Use eitherImproper Galvanic Isolation Logic PowerExternal CharacteristicsPower Supply RequirementsTechnical Specifications STB NIB 1010 Module SpecificationsConfiguring the Island Bus Bus Address Basic island configurationAuto-Addressing About the IslandModule Physical Location Island Bus Address An ExampleAbout Auto Auto-ConfigurationConfiguration Stage Been successfully configured at least onceRST Button Hinged coverHeartbeat Island Fallback ScenariosFallback ScenariosIntroduction What’s in this Chapter? Fieldbus Communications SupportData Type Interbus ID CodeLow High BytesData Length Objects Data ExchangeData and Status ObjectsBoundaries InternalProcess Image WordContains the NIM status Output DataInput Data ExchangeWith an Advantys STB NIB 1010 basic NIM Application ExampleSample Island Sample Island AssemblyAssembly Fieldbus networkModel Module Type Island Bus Address I/O modules have the following island bus addressesDevices on an Interbus network Network Configuration ConsiderationsFor use with an Advantys STB island ConnectionConsiderations Before YouBegin SyConStep Action Comment Using SyCon to Configure an STB Island on InterbusWith SyCon Stage DescriptionWorkspace To add the NIM to the network configurationConfiguring Add the NIMInstructions Create an EDSSaving CMD Using CMD to Configure an STB Island on InterbusIsland slave to your configuration using CMD Downloading AddAdding Island SlaveApplication Example Glossary BOS ARPCRC CanCOB ComsEIA DhcpDIN EDSFedp EMCEMI EOSGSD FsdpIEC type 1 input BaseScanning IECInput response Industrial I/OInput filtering Input polarityNema Energized and open when the coil is energizedEnergized and closed when the coil is energized ContactNMT NIMPLC PDMPDO Profibus DP Process I/OProducer Consumer modelSDO RTDSAP ScadaSnmp SmmpsTFE StdpTCP Voltage group UDPVaristor Suppress transient voltage surgesIndex Interbus Heartbeat message, 34 housing ID codeIndex