Siemens UL 489 What is Java?, Circuit breaker requirements, Getting started with the BDA Plus

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Breaker Data Adapter (BDA)

WL Circuit Breaker

System Requirements

Certain prerequisites have to be fulfilled before the BDA or BDA Plus can be operated. One of the two standard browsers (Internet Explorer V5.5 or higher or Netscape Navigator V6.2 or higher) must be installed on the output device (e.g. laptop). Compatibility with other browsers cannot be guaranteed.

To ensure independence between the operating systems and browsers, all the pages have been written in HTML code and Java applets. A Java Virtual Machine is required to display the pages.

What is Java?

Java is a platform-neutral object- oriented programming language originally developed by Sun Microsystems. Java is implemented in all IT areas of the commercial, industrial and administrative sectors, and is available free of charge for many operating systems and platforms – from cell phones to real-time mainframe systems.

Unlike most compiler languages, Java applets are not directly translated into a set of commands that can be understood by a "Real Processor". Instead, they are first converted to the "Java Byte Code". Although this byte code is highly machine-oriented, a "Java Virtual Machine" (VM), which emulates a standardized processor for all Java applets, is required on the target computer.

Since Java normally compiles data twice (once with the developer and once with the user), this principle is known as the “Just-In-Time “(JIT) Compiler. Although, Java applets take longer to start, since the machine code is generated during initialization.

However, the same Java applet can run on all supported systems without modifications.

The Java Virtual Machine V2 V1.4.0_01 is required to display the BDA pages. When these pages are called up for the first time, the BDA checks whether Java VM2 is available on the browser. If not, the system automatically displays a window informing the user of this and automatically links the user to the appropriate Sun Microsystems page. An Internet connection must be established to ensure the automatic installation procedure functions properly. If this is not the case, the Virtual Machine required for the Microsoft Windows operating systems can be downloaded from the following address:

http://java.sun.com/products/archive /j2se/1.4.0_01/index.html

Once installed, the option Java 2VM V1.4.0_01 must be activated in the browser (if it is not already).

To avoid conflicts with other Java versions, it is recommended that you uninstall older versions of Java and delete the cache in the browser.

The target system with the browser also requires one or both of the following communication interfaces:

•A serial interface with RS232 design, usually integrated on standard PCs (e.g. COM1) for point-to-point (PPP) communication with the BDA.

•A LAN interface for communicating with the BDA Plus via the Ethernet.

Circuit breaker requirements

The BDA can be connected to WL Circuit Breakers with the following trip units: ETU745, ETU748, ETU755 and ETU776. It can be connected either directly to the trip unit or to the last external CubicleBUS module. Circuit breakers can also communicate with the BDA if they have been retrofitted with the communication function.

Getting started with the BDA Plus

If the BDA Plus is is being installed for the first time, the settings for the IP address and the standard gateway as well as the subnet mask must be set using the serial communication via RS232. After this the BDA Plus must be rebooted to load the Ethernet driver with the specified parameters.

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WL MODBUS Communication and Electronic Accessories • January 2005

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Contents Global network of innovation Powerful ideasCommunication-capable Circuit Breakers Communication-capable Circuit Breaker Qualified Personnel Safety GuidelinesCorrect Usage Registered TrademarksIntroduction Overview Content of the Manual GeneralIntroduction WL Circuit Breakers-Modular Intelligent System SolutionsCost Saving Easy PlanningModbus Communication Bus SystemsCommunication Structure of the WL Circuit Breakers Ethernet WL Circuit Breaker Brief Description of the WL Circuit Breaker Introduction and OverviewCommunications Capability of the Electronic Trip Units ETUs CubicleBUSETU725 ETU727 ETU745 Functional overview of the trip unit systemBasic Functions ETU725 ETU727 ETU745 Setting range of the IgBasic Functions ETU748 ETU755 ETU776 Communication Data point group ETU745 Data Availability on the CubicleBUSMetering Data points with the same source 755 orPin Configuration Modbus COM16 Module and the BSSModbus Module COM16 Modbus Installation Guideline Modbus Write Protection DPWriteEnableData Exchange via the COM16 Module Meaning Position and text on the cable CubicleBUSCubicleBUS + Meaning Rear Microswitch S46 Middle S47 Front S48Cubicle BUS LED Meaning PositionBreaker Status Sensor BSS General Metering Function PlusMetering Function Plus Harmonic analysisWaveform buffer Voltage Transformers Parameters for the settings of the metering functionVT Accuracy Maximum distance from voltage transformerMetering range 81THDC Important functions/parameters for communications Load ManagementExtended Protective Function Setpoints Normal Positive Power Flow DirectionMinimum for Communicated Currents Event and Trip LogRotary Switches InstallationExternal CubicleBUS Modules Power Supply Maximum CubicleBUS ConfigurationCubicleBUS Installation Guidelines Meaning LED DisplayCubicleBUS LED Meaning All other LEDs MeaningDevice Testing the Digital Input and Output ModulesDigital Input Module Technical data for the digital input moduleFunctional description Functional description for changing parameter setsSelector switch position to the left Digital Output Module with Rotary SwitchSelector switch position to the right Delay timeConfigurable Digital Output Module Trigger event Waveform buffer B Technical data for the digital configurable output moduleAnalog Output Module Power value ranges W/VASwitch position cos Technical data for the analog output moduleTest function ZSI Module Operating principleExample as illustrated in Graphic It trips after tZSI = 50 ms. Time saved = 250 ms Technical data for the ZSI moduleCommunication-capable Circuit Breakers General information Output current Inrush current Type Order No Communication-capable Circuit Breakers Modbus Profile for WL Circuit Breaker Supervisory Systems COM16 Supported Function Codes Function 01 Read CoilsFunction 02 Read Discrete Inputs Function 03 Read Holding Registers Request Message to slaveReply Message from slave Function 04 Read Input Registers Function 05 Write Single CoilFunction 07 Read Exception Status Function 08 Diagnostics Function 11 Get Communication Event CounterFunction 12 Get Communication Event Log COM16 slave Send Event What the Event Bytes ContainFunction 15 Write Multiple Coils Function 16 Write Multiple Registers Exception Responses Code Name Meaning Exception CodesDefault Register Lists Basic Data Type 1 Registers and Default Data PointsBasic Data Type 2 Registers and Default Data Points Basic Data Type 3 Registers and Default Data Points Data bytes Complete List of DatasetsMin Max Bits Sample DatasetByte Register Description Bit Mapping for Breaker Status RegisterWL Configurator Brief Description Communication-capable Circuit Breakers Breaker Data Adapter BDA Breaker Data Adapter Plus BDA Plus Brief Description and System Requirements Description Benefits of the BDA BDA as a Hand-Held Device or BDA Plus BDA in Offline Mode or BDA PlusIntranet and Internet BDA Plus as an Ethernet InterfaceWhat is Java? Circuit breaker requirementsGetting started with the BDA Plus Connection to WL Circuit Breakers TemporaryPermanent Meaning of the LEDs on the BDA Operation4This table provides technical data for the BDA and BDA Plus Technical data for the BDA and BDA PlusUsually have to be changed. They are shown as a reference Connection to the BDA via the Serial Communication SystemBreaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Definition of Key Terms Connection to the BDA Plus via the Ethernet InterfaceSubnet Mask IP AddressesExample BDA IP AddressOffline/Online Mode Operating Instructions and TroubleshootingLanguages and Help Displaying DataSentron Password ProtectionOperation Example PrintingTroubleshooting List Fault Description Solution Siemens Energy & Automation, Inc. All Rights Reserved Siemens Energy & Automation, Inc
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