Siemens NET-7 Installation Instructions Manual

Contents

installation instructions

P/N 315-091914-13Installation InstructionsModel NET-7Communication InterfaceINTRODUCTIONThe Model NET-7 from Siemens Industry, Inc.,provides a Style 7 communication interface betweenthe main MXL and multiple remote panels in an MXLsystem using two separately supervised RS-485pairs. Each NET-7, except the NET-7 connected tothe MMB, electrically isolates the pairs from the localpower supply and isolates ground faults to a singleremote panel. The MMB provides ground faultdetection for the two pairs.Each NET-7 connected represents one network dropon the MXL System. There can be a maximum of 32drops. The NET-7 has a network address which mustbe set on the module and installed into the CSG-Mnetwork map.The NET-7 has two yellow LEDs:1. XMIT ENABLE lights whenever the NET-7transmits a message.2. ANY TROUBLE lights when the NET-7 is unableto communicate to the MMB on either pair.Three green LEDs on the NET-7 indicate the stateof two communication pairs. The first two LEDs,PRIMARY and SECONDARY, light whenever theNET-7 receives a message on that pair. Use thesetwo LEDs when troubleshooting to determine if apair is active. The third green LED, SELECT,indicates the communication pair currently connectedto the modules in the enclosure. In normal operation,the SELECT LED turns on and off every time there isnetwork activity. If this LED remains in one state(either on or off), it indicates that one or both of thepairs is not functional. The SELECT LED lights whenthe PRIMARY pair is selected.The NET-7 can also provide a Style 4 communicationmode. In that configuration all NET-7s must be set toStyle 4. Use P3 on the NET-7 to make this selection.CAUTION: NET-7s and NET-4s cannot becombined in the same system.The NET-7 offers advanced performance over theNET-4. Each NET-7 determines which modules areinstalled in its enclosure and reports this informationto the MMB where it is compared to the CSG-M database. That information verifies that the system isproperly installed. The default setting in the MXL hasthis feature deactivated. The user can change thedefault setting in CSG-M or temporarily change thesetting by selecting the OVERRIDE submenu of theTEST menu in the MXL. When using the MXL menu,the change remains in effect until power is removed.Error checking is available in either Style 4 or Style 7.All terminals are power limited.For additional information on the MXL/MXLV System,refer to the MXL/MXLV Manual, P/N 315-092036.Siemens Industry, Inc.Building Technologies DivisionFlorham Park, NJSiemens Building Technologies, Ltd.Fire Safety & Security Products2 Kenview BoulevardBrampton, OntarioL6T 5E4 Canada

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