Breaker Data Adapter (BDA)

WL Circuit Breaker

Connection to the BDA via the Serial Communication System

To operate the BDA, it must be connected to the target system (e.g. a PC) on one side and a circuit breaker on the other. A range of options are available, depending on the application and operating system.

To ensure that serial communication is possible between the target system and the BDA, you should carry out the following steps:

•Connect the BDA to the circuit breaker and power supply.

•Connect the BDA to the COM interface of the target system (e.g. PC) using a fully assigned null modem cable. Note: With a null modem cable, pins 2 and 3, 4 and 6, and 7 and 8 must be assigned and reversed with respect to each other.

The COM port cannot be used by a different application.

•Installing a standard modem. Once the physical connection has been established using a null modem cable, a standard modem must be installed on each PC. The procedure for installing the modem varies slightly depending on the operating system. The screenshots on the following pages provide a step-by-step guide to the procedure. The standard modem to be selected - 28800 bps - is not related to the actual transmission rate. The examples illustrate the connection to the COM1 interface; other interfaces must be set accordingly. The installation process always begins in the Control Panel of the operating system. The default settings in the "Properties" windows of the modem do not

usually have to be changed. They are shown as a reference.

The screenshots on the following pages for Windows98 are identical for Windows95, WindowsNT, and WindowsME. WindowsXP screens are virtually the same as those in Windows2000.

•Installing a data communications connection.

Once a standard modem has been installed, a communications link must be established via this modem. To do so, a data communications connection must be set up via "Workstation > Data Communications Network". Once the appropriate modem has been selected, the maximum rate has to be selected again. The name of the connection is user defined, while the user name must be "ppp" and the address signal "555". A preselection code and password must not be entered. All of these settings are shown on the following pages. Windows98 screenshots are used to represent the operating systems Windows95, Windows98; WindowsNT, and WindowsME. Only the screenshots from WindowsXP are used for Windows2000 and WindowsXP.

•Establishing the connection. A communications link is established by activating the installed data communications connection. Once the user name and password have been checked (a password must not be entered), the window for establishing the connection disappears from the Windows systray. The systray is the area on the bottom right next to the system clock in the toolbar. A small icon with two computers appears here. Double-clicking this opens a window displaying the properties of this connection. A test ping can also be used to

check that the connection has been established correctly. Once you have opened the entry screen (Start > Execute) and entered "ping 2.2.2.1", a DOS box appears that displays either "Reply from

2.2.2.1after..." (connection OK) or "Reply timed out" (connection not available).

•Start the browser (Internet Explorer or Netscape Navigator)

•Entering the target IP address

You have to enter 2.2.2.1 in the address line. The usual "http://" does not have to be entered. When you press ENTER, the pages will be loaded from the BDA. Note: You may have to include the address 2.2.2.1 in the list of addresses that do not use a proxy server. The use of a proxy server is optional and depends on the network.

A desktop link can be created if the BDA connection is used frequently. To create an Internet Explorer link with the local IP address of the BDA on the desktop, you have to drag the Internet Explorer icon in the address line to the left of the address to the desktop. Alternatively, the BDA start icon can be used. To do so, press the left mouse button to save it on the hard disk as a bitmap and specify it as an icon in the properties window of the link saved on the desktop.

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WL MODBUS Communication and Electronic Accessories • January 2005

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Siemens UL 489, UL1066 specifications Connection to the BDA via the Serial Communication System
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UL 489, UL1066 specifications

Siemens UL1066 and UL489 are essential components in the landscape of electrical equipment, specifically in circuit protection and control. These standards ensure reliability, safety, and efficiency in various applications, including industrial, commercial, and residential settings.

The Siemens UL1066 is primarily focused on disconnect switches. These devices are designed to isolate electrical circuits, ensuring the safety of both personnel and equipment during maintenance or in case of faults. One of the key features of UL1066 disconnect switches is their high breaking capacity, enabling them to handle significant fault currents without failure. This characteristic is crucial in protecting downstream equipment from damage caused by short circuits. The UL1066 switches are also known for their robust construction, often featuring a metal enclosure that enhances durability and environmental resistance. Additionally, these switches can be operated manually or remotely, offering flexibility in operation and control.

On the other hand, Siemens UL489 circuit breakers provide comprehensive protection against overcurrents and short circuits. These devices not only interrupt fault currents but also protect connected devices from damage due to overload situations. Key features of UL489 circuit breakers include adjustable trip settings, which allow users to customize the response to overcurrent conditions based on specific application requirements. This adaptability makes them suitable for a wide range of environments, from large industrial plants to smaller commercial buildings.

Both UL1066 and UL489 products are constructed with advanced technologies, such as thermal-magnetic or electronic trip mechanisms in UL489 devices, ensuring precise and timely interruption of fault currents. These technologies promote energy efficiency and stability within electrical systems. In addition, many of these devices are equipped with indication features, providing clear visual status cues for quick assessment in emergency situations.

In terms of characteristics, both UL1066 and UL489 devices adhere to rigorous testing and certification processes to meet UL standards. This compliance assures users of their performance and reliability. Furthermore, the devices are designed to accommodate a wide range of operating temperatures and environmental conditions, making them versatile choices for various applications.

In summary, Siemens UL1066 and UL489 devices are paramount in ensuring safety and efficiency in electrical circuits. Their advanced features and robust construction make them indispensable in protecting both personnel and equipment in an array of industrial and commercial applications.
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