The LR-11 router offers an easy way to extend the distance between LONWORKS® 78 kbit/s TP/FT network segments using a high-speed 1.25 Mbit/s backbone fibre optic network link.
LR-11 is based on Echelon’s RTR-10 standard router core module, this allowing standard configuration and installation with tools as LonBuilder® and LonMaker™.
The LR-11 is equipped with either one (PP-version) or two pairs of fibre optic receivers and transmitters. This allows the user to build either point to point-, bus- or ring topology fibre links. In a fibre ring, one of the LR-11 units will be assigned as a ring master and then having the responsibility to stop messages from looping around the ring. The LR-11 has a built-in redundancy scheme that provides for fault tolerances in the fibre ring.
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LONWORKS®, 78 kbit/s TP/FT-10 |
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Fibre optic 1.25 Mbit/s |
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Router function (based on Echelon’s RTR-10 router module) |
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Distance up to 25 km on fibre |
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Point to point (LR-11 PP) |
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Multidrop or redundant ring |
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Optical signal regenerated |
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Multi- / Single mode fibre |
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Alarm output indicating failure |
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