HVAC Control in the New Millennium.pdf - HVAC.Amickracing

HVAC Control in the New Millenniummatically compares the newly edited program with the previous copywhen a program is checked back into the library. It then reports theresults of this comparison via e-mail to designated users, indicating whomade the changes and how the changes were made. This type of feedbackhelps maintenance personnel alleviate bottlenecks, avoid downtime,and simplify the maintenance of control systems. A variety of userscan easily obtain information critical to the maintenance of the controlenvironment from anywhere inside or outside the plant and with noother software except a standard Web browser.Interbus Automation SoftwareAutomation software combines proven software standards such asIEC 61131-3 and Windows NT into one control package. PC Worx providesprogramming, configuration, monitoring, and diagnostics of anInterbus system and can be used with Interbus field controllers. Thepackage consists of System Worx for configuration, monitoring, anddiagnostics. Program Worx is an IEC 61131-3-based programming toolfor creating the application control program.With the help of the Interbus system OLE for process control (OPC)server, PC Worx can exchange data with any HMI or software packagethat has an OPC client. Standardized interfaces such as OPC simplify thedata exchange between PC Worx and other NT programs.Ethernet I/O DriversNew software drivers support the Linux operating system andcombines TCP/IP communications, 10- or 100-Mbps performance andopen protocols. These I/O systems have built-in Web servers for configuration,maintenance and operator interface. With Ethernet I/O, userscan interface analog and digital I/O devices to a computer for monitoringand control applications.Wireless Local-area NetworksThe WaveLAN/IEEE Turbo system can provide wired Ethernetequivalentdata rates and improved response times for data-intensive©2001 by The Fairmont Press, Inc. All rights reserved.