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Practical Industrial Data Networks:Design, Installation and ...

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DeviceNet overview 161DATA RATES 125 Kbaud 250 Kbaud 500 KbaudTrunk DistanceMax. Drop LengthCumulative DropNumber of Nodes500m (1640ft)20ft512ft64250m (830ft)20ft256ft64100m (328ft)20ft128ft64Figure 12.7Constraints: Thick wireDATA RATES 125 Kbaud 250 Kbaud 500 KbaudTrunk Distance 100m (328ft) 100m (328ft) 100m (328ft)Max. Drop LengthCumulative DropNumber of Nodes20ft512ft6420ft256ft6420ft128ft64Figure 12.8Constraints: Thin wireDATA RATES 125 Kbaud 250 Kbaud 500 KbaudTrunk DistanceMax. Drop LengthCumulative DropNumber of Nodes420m (1378ft)20ft512ft64200m (656ft)20ft256ft6475m (246ft)20ft128ft64Figure 12.9Constraints: Flat wire12.5 Device taps12.5.1 Sealed tapsSealed taps are available in single port (T type) <strong>and</strong> multiport configurations. Regardlessof whether the connectors are mini or micro style, DeviceNet requires that maleconnectors must have external threads while female connectors must have internalthreads. In either case, the direction of rotation is optional.Figure 12.10Sealed taps

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