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Applications

Renowned for its high reliability, the TC2400 High Speed Multi-Drop Modem is ideal for Self-Healing Ring communication links in SCADA, Traffic Control, Industrial Process Control and security networks.  It is frequently used to interconnect Remote Terminal Units (RTUs) or Programmable Logic Controllers (PLCs) in Utility substation SCADA Networks. The TC2400 can also be used to extend telephone lines to remote locations with the Model TC1900 RS-232/Fiber Phone Extender.

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Description                                        

Intended for self-healing ring topologies, the TC2400 High Speed Multi-Drop Fiber Optic Modem links monitoring devices (RTUs or PLCs) fitted with RS-232, RS-422 or RS-485 interfaces to a Host controller or CPU. The Self-Healing Ring scheme is sophisticated, i.e. it detects upstream and downstream failures on both Tx and Rx, and automatically re-routes any cable or equipment failure to insure uninterrupted operation.

Asynchronous data rates can be up to 1 Mbps*.  The RS-485 electrical port can be multi-dropped. Two special versions, Model TC2400T, is available for high temperature (-20°C to 70°C) and extreme temperature (-40°C to 80°C) applications.

Each unit comes standard with two pair of fiber interfaces and either one RS-232, RS-422 or RS-485 interface.  Units with a second RS-232, RS-422, and RS-485 interfaces are optional.  "Anti-Streaming" capability is standard.  Anti-streaming prevents a single node failure (e.g. "babbling") from bringing down the entire network.

Diagnostic LEDs are provided for "Tx", "Rx", "Fault", and "Power" and more.  Diagnostic functions include local & remote loopback and a built-in signal generator.

The TC2400 is compatible with all popular types and sizes of fiber optic cable and is available multimode (850/1300nm) or single mode (1300/1550nm).  Fiber optic connectors are ST or FC.  Electrical connectors are RJ-11 female.  Power is 12VDC; optional 24VDC, -48VDC, or 115/230VAC with an external power cube.

A Self-Healing ring consists of two data paths, Ring A and Ring B, with each data path running in an opposite direction to the other.  Under normal operation only the primary data path (Ring A) is used.  When there is fault (cable or failed device), the data path will turn around before it reaches the fault or failed unit and use the secondary data path to complete the link.  In this manner, the data path will remain intact.

*Data rates vary according to interface.  See specifications.

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Technical Specifications    

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Page Last Updated: 03/25/2008