User manual

Publication CNET-UM001C-EN-P - November 2005

Determine Your ControlNet Media Requirements C-17

Use Redundant Media

You can run a second trunk cable between your ControlNet nodes for

redundant media. With redundant media, nodes send signals on two separate

segments. The receiving node compares the quality of the two signals and

accepts the better signal to permit use of the best signal. This also provides a

backup cable should one cable fail.

Trunk cables on a redundant cable link are defined by the segment number and

the redundant trunk-cable letter.

Actual ControlNet products are labeled with these icons

(the shaded icon representing redundant media).

In this figure, the redundant cable trunk cable is trunk cable B.

Figure C.8 Redundant Media

Node

Trunk Cable A =

43629

Trunk Cable B =

Node

To use redundant media, all nodes must support redundant media.