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Examples of Industrial Dial-up/Leased Line Modem Applications
Oil and Gas/Petrochemical— Oilgear Company
Data transmitted over 10 miles between GE Fanuc 90-30 Processors using Data-Linc DLM4000 Industrial Leased Line Modems.
Power/Utility— Power Substation
Border States Electric in Fargo, North Dakota, has integrated Data-Linc Group's CCS9000 system with Cooper Power Systems Form 5 Controls to communicate with a power substation. The system uses a Data-Linc DLM4100 dial-up Master to connect over a standard phone line to a CCS9000 Dial-up 4-port switch. A Data-Linc Group DLM4100 leased-line Master is connected to the "5th port" on the CCS9000 4-port switch and connects to its 4-port switch via twisted pair. The combination of these components gives the user eight ports available to be selected over a single phone line. Each port can be configured to talk at different baud rates and the system can also be expanded by adding more Masters to remote 4-port switches using the 5th port on the remote switches. The whole system is controlled via Data-Linc's CONNECTTMsoftware. From CONNECT, the user can select the remote location (if more than one is available) and then the port. The software does the rest. Once CONNECT establishes the connection, it then releases the port and, if selected, "auto" starts the application needed to communicate with the device that is connected to the selected port. Once the communication session is completed, CONNECT is used to either select another port with which to communicate or to close the connection.
Water/Wastewater— Reclamation
Alarm conditions are transmitted over Data-Linc DLM4000 Industrial Dial-up Modems for 24 hour communication with an Allen Bradley PLC-5.
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