Denso RC5 Especificaciones descargar pdf (Pagina 87)

Trunk line length

The permissible total length of a trunk line used in a DeviceNet network will differ

depending upon the data transmission speed and the type of cables used (thick cable

or thin cable).

Communications

speed

Maximum cable length

when only thick cables are used

Maximum cable length

when only thin cables are used

125 Kbps 500 m

250 Kbps 250 m

500 Kbps 100 m

100 m

A DeviceNet network may be constructed with thick and thin cables together. In such

a case, the permissible total lengths of thin and thick cables can be obtained

according to the calculation formulae below.

Communications

speed

Maximum network length

125 Kbps L (thick) + 5 × L (thin) ≤ 500 m

250 Kbps L (thick) + 2.5 × L (thin) ≤ 250 m

500 Kbps L (thick) + L (thin) ≤ 100 m

Drop line length

The drop line length is cable distance between the trunk line tap and the farthest

node on the drop line. The permissible overall length of drop lines throughout the

network (“total length”) depends on the communications speed, and must be within

the lengths listed in the table below.

Drop line length

Communications

speed

Maximum length Overall length

125 Kbps 156 m

250 Kbps 78 m

500 Kbps

6 m

39 m

“L (thick)” indicates the length of

thick cables.

“L (thin)” indicates the length of

thin cables.

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Denso RC5 Especificaciones Pagina 87