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CEI StationLink <br />StationLink Host <br />The StationLink Host is a PC-based system designed by Control Engineers (CEI) to <br />' provide centralized communications to one or more CEI Series 3000 remote units. <br />StationLink performs the following major functions: <br />' Dial -Up Communications <br />The StationLink uses its internal Hayes modem to communicate to multiple Series <br />3000 units. On a daily basis, StationLink will automatically poll any or all of the <br />remote sites for inventory, delivery, and alarm data. The user can also retrieve an <br />immediate snapshot of inventory, delivery, and alarm data at any site. <br />' The StationLink protocol implements CRC -16 error checking and allows for organized <br />data transfer. The StationLink maintains phone diagnostics for all remote units, to <br />assist the user with maintaining the dial-up network. <br />' Data Storage <br />There are three data types stored by StationLink : Inventory, Delivery, and Alarm <br />data. Inventory consists of tank capacity, gross inventory, ullage, water level, and <br />product temperature for each product. The delivery information consists of the <br />beginning date of delivery, the beginning time of delivery, and the product and water <br />levels before and after delivery. <br />' Alarm data consists of the date, time, product, and description of the alarm condition <br />that has occurred at the CEI 3000. The date and time that the alarm cleared is also <br />I <br />recorded. The potential alarm conditions are: <br />High Product Level <br />Low Product Level <br />• High Water Level <br />Fuel Loss (Theft) <br />Level Gauge Fail <br />• Tank Leak Test Fail <br />• 3 GPH Line Test Fail <br />• Precision Line Test Fail <br />• Turbine Failure <br />The Series 3000 can collect data from a wide variety of external sensors, such as <br />sump probes, annular space probes, water wells, vapor wells, etc. StationLink will <br />Control Engineers, Inc. Page 2 <br />