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Installation and Setup Guide - Lathem Time Corporation

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PayClock Pro <strong>Installation</strong> <strong>and</strong> <strong>Setup</strong> <strong>Guide</strong>transmission speed, of 9600. For distances greater than 50 feet, we recommend an RS-485connectionThe Electronics Industries Association represents American manufacturers. The EIA publishesst<strong>and</strong>ards such as EIA RS-232D <strong>and</strong> RS-485 that govern the electrical characteristics ofconnections between the personal computer <strong>and</strong> external peripherals such as terminals, printers,<strong>and</strong> modemsRS-485 ConnectionsFor this connection, an RS-485 converter is connected to one of the computer’s COM ports via anRS-232 connection. You should use the – SWIFT PC converter (Swift 485+) – for PC2000,PC400 or PC100-D terminals. You should use the – SWIFT PC converter (Pro series) – forPC3500 terminals. You can then connect up to 31 terminals in various configurations with amaximum bus-cable length of 4000 ft. A single RS-485 converter can operate in several differentmodes depending on the types of terminals connected to it. Select the appropriate mo del <strong>and</strong> modeof converter from the Type selection on the General Tab of the Converter Properties window. Youcan also connect Sync <strong>Time</strong> Devices via RS-485: Digital Wall Clocks, Mini Masters <strong>and</strong>Sonachrons. According to the Electronic Industries Association (EIA) the distance from the PC tothe terminal(s) should not exceed 4000 feet.The Electronics Industries Association represents American manufacturers. The EIA publishesst<strong>and</strong>ards such as EIA RS-232D <strong>and</strong> RS-485 that govern the electrical characteristics ofconnections between the personal computer <strong>and</strong> external peripherals such as terminals, printers,<strong>and</strong> modemsModem ConnectionsA modem connection allows a Hayes compatible modem attached to a PC to communicatethrough a telephone s ystem to a remote terminal equipped with <strong>Lathem</strong>’s modem option. Oncedial up communications is established, the local <strong>and</strong> remote modems allow the PC <strong>and</strong> terminalsto communicate as if they are directly connected. The modem connection provides the leastexp ensive alternative for periodic movement of data over long distances for two reasons. First, theconnection works with most voice-grade telephone lines, enabling a PC <strong>and</strong> an attached modem todial <strong>and</strong> communicate with a remote terminal through the public telephone system. Second, youdo not have to use a dedicated telephone line to make periodic calls with the computerBecause of the early dominance of the Hayes Smartmodem in the PC community, most modemvendors today include a Hayes-compatible comm<strong>and</strong> mode in their products. This comm<strong>and</strong> modeenables you to use software designed specifically for the Hayes comm<strong>and</strong> set. Besides the Hayesmode, some modems also have a mode specifically designed by the modem manufacturer. Themanufacturer’s own mode often duplicates the Hayes mode, <strong>and</strong> can provide additionalcapabilities beyond those found in the Hayes mode173

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